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data-dom-id="Pill-react-component-a9d6db85-6c30-4c16-8f6a-85e5cb901049"></div> <div id="Pill-react-component-a9d6db85-6c30-4c16-8f6a-85e5cb901049"></div> </a></div></div></div></div><div class="right-panel-container"><div class="user-content-wrapper"><div class="uploads-container" id="social-redesign-work-container"><div class="upload-header"><h2 class="ds2-5-heading-sans-serif-xs">Uploads</h2></div><div class="documents-container backbone-social-profile-documents" style="width: 100%;"><div class="u-taCenter"></div><div class="profile--tab_content_container js-tab-pane tab-pane active" id="all"><div class="profile--tab_heading_container js-section-heading" data-section="Papers" id="Papers"><h3 class="profile--tab_heading_container">Papers by Ermina Begovic</h3></div><div class="js-work-strip profile--work_container" data-work-id="122447363"><div class="profile--work_thumbnail hidden-xs"><a class="js-work-strip-work-link" data-click-track="profile-work-strip-thumbnail" href="https://www.academia.edu/122447363/High_speed_craft_dynamics_in_waves_challenges_and_opportunities_related_to_the_current_safety_philosophy"><img alt="Research paper thumbnail of High-speed craft dynamics in waves: challenges and opportunities related to the current safety philosophy" class="work-thumbnail" src="https://attachments.academia-assets.com/117108883/thumbnails/1.jpg" /></a></div><div class="wp-workCard wp-workCard_itemContainer"><div class="wp-workCard_item wp-workCard--title"><a class="js-work-strip-work-link text-gray-darker" data-click-track="profile-work-strip-title" href="https://www.academia.edu/122447363/High_speed_craft_dynamics_in_waves_challenges_and_opportunities_related_to_the_current_safety_philosophy">High-speed craft dynamics in waves: challenges and opportunities related to the current safety philosophy</a></div><div class="wp-workCard_item"><span class="js-work-more-abstract-truncated">This paper considers the assessment of vertical accelerations of high speed planing craft in wave...</span><a class="js-work-more-abstract" data-broccoli-component="work_strip.more_abstract" data-click-track="profile-work-strip-more-abstract" href="javascript:;"><span> more </span><span><i class="fa fa-caret-down"></i></span></a><span class="js-work-more-abstract-untruncated hidden">This paper considers the assessment of vertical accelerations of high speed planing craft in waves as the principal element for the risk management approach, i.e. formulation and application of operational limitations and operational guidance. Semi-empirical methods used by classification societies for vertical acceleration assessment are scrutinized. Insights from model experiments performed at the University of Naples "Federico II" (UNINA) and simulations performed at the Royal Institute of Technology (KTH) are presented. Deficiencies of the prevailing semi-empirical methods, and challenges and opportunities with a combined experimental-numerical approach, are discussed in perspective of the IMO high-speed craft safety philosophy.</span></div><div class="wp-workCard_item wp-workCard--actions"><span class="work-strip-bookmark-button-container"></span><a id="c1547c74e800b7e86cdb7b0c82a00452" class="wp-workCard--action" rel="nofollow" data-click-track="profile-work-strip-download" data-download="{"attachment_id":117108883,"asset_id":122447363,"asset_type":"Work","button_location":"profile"}" href="https://www.academia.edu/attachments/117108883/download_file?s=profile"><span><i class="fa fa-arrow-down"></i></span><span>Download</span></a><span class="wp-workCard--action visible-if-viewed-by-owner inline-block" style="display: none;"><span class="js-profile-work-strip-edit-button-wrapper profile-work-strip-edit-button-wrapper" data-work-id="122447363"><a class="js-profile-work-strip-edit-button" tabindex="0"><span><i class="fa fa-pencil"></i></span><span>Edit</span></a></span></span></div><div class="wp-workCard_item wp-workCard--stats"><span><span><span class="js-view-count view-count u-mr2x" data-work-id="122447363"><i class="fa fa-spinner fa-spin"></i></span><script>$(function () { var workId = 122447363; window.Academia.workViewCountsFetcher.queue(workId, function (count) { var description = window.$h.commaizeInt(count) + " " + window.$h.pluralize(count, 'View'); $(".js-view-count[data-work-id=122447363]").text(description); $(".js-view-count[data-work-id=122447363]").attr('title', description).tooltip(); }); });</script></span></span><span><span class="percentile-widget hidden"><span class="u-mr2x work-percentile"></span></span><script>$(function () { var workId = 122447363; window.Academia.workPercentilesFetcher.queue(workId, function (percentileText) { var container = $(".js-work-strip[data-work-id='122447363']"); container.find('.work-percentile').text(percentileText.charAt(0).toUpperCase() + percentileText.slice(1)); container.find('.percentile-widget').show(); container.find('.percentile-widget').removeClass('hidden'); }); });</script></span></div><div id="work-strip-premium-row-container"></div></div></div><script> require.config({ waitSeconds: 90 })(["https://a.academia-assets.com/assets/wow_profile-a9bf3a2bc8c89fa2a77156577594264ee8a0f214d74241bc0fcd3f69f8d107ac.js","https://a.academia-assets.com/assets/work_edit-ad038b8c047c1a8d4fa01b402d530ff93c45fee2137a149a4a5398bc8ad67560.js"], function() { // from javascript_helper.rb var dispatcherData = {} if (true){ window.WowProfile.dispatcher = window.WowProfile.dispatcher || _.clone(Backbone.Events); dispatcherData = { dispatcher: window.WowProfile.dispatcher, downloadLinkId: "c1547c74e800b7e86cdb7b0c82a00452" } } $('.js-work-strip[data-work-id=122447363]').each(function() { if (!$(this).data('initialized')) { new WowProfile.WorkStripView({ el: this, workJSON: {"id":122447363,"title":"High-speed craft dynamics in waves: challenges and opportunities related to the current safety philosophy","translated_title":"","metadata":{"grobid_abstract":"This paper considers the assessment of vertical accelerations of high speed planing craft in waves as the principal element for the risk management approach, i.e. formulation and application of operational limitations and operational guidance. 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The annual productivity of the device is strictly correlated to the hydrodynamic properties of the floater. Therefore, is fundamental to carry out an experimental investigation of the hydrodynamic performance of the floater and compare the results with the numerical codes. In this paper the experimental campaign is described. Two different mooring configurations were tested to understand the different influence of mooring forces on the floater dynamics. The non-dimensional Response Amplitude Operator (RAO) is representative of the hydrodynamic performances of the floater. Therefore, the device with both the mooring configurations has been tested in regular waves of constant wave steepness 1/50. Conclusions are commenting the differences a between numerical and experimental results and the impact of nonlinearities on hydrodynamic performances.</span></div><div class="wp-workCard_item wp-workCard--actions"><span class="work-strip-bookmark-button-container"></span><a id="b9bf13d91005181e461bb6e481081f1d" class="wp-workCard--action" rel="nofollow" data-click-track="profile-work-strip-download" data-download="{"attachment_id":117108879,"asset_id":122447359,"asset_type":"Work","button_location":"profile"}" href="https://www.academia.edu/attachments/117108879/download_file?s=profile"><span><i class="fa fa-arrow-down"></i></span><span>Download</span></a><span class="wp-workCard--action visible-if-viewed-by-owner inline-block" style="display: none;"><span class="js-profile-work-strip-edit-button-wrapper profile-work-strip-edit-button-wrapper" data-work-id="122447359"><a class="js-profile-work-strip-edit-button" tabindex="0"><span><i class="fa fa-pencil"></i></span><span>Edit</span></a></span></span></div><div class="wp-workCard_item wp-workCard--stats"><span><span><span class="js-view-count view-count u-mr2x" data-work-id="122447359"><i class="fa fa-spinner fa-spin"></i></span><script>$(function () { var workId = 122447359; window.Academia.workViewCountsFetcher.queue(workId, function (count) { var description = window.$h.commaizeInt(count) + " " + window.$h.pluralize(count, 'View'); $(".js-view-count[data-work-id=122447359]").text(description); $(".js-view-count[data-work-id=122447359]").attr('title', description).tooltip(); }); });</script></span></span><span><span class="percentile-widget hidden"><span class="u-mr2x work-percentile"></span></span><script>$(function () { var workId = 122447359; window.Academia.workPercentilesFetcher.queue(workId, function (percentileText) { var container = $(".js-work-strip[data-work-id='122447359']"); container.find('.work-percentile').text(percentileText.charAt(0).toUpperCase() + percentileText.slice(1)); container.find('.percentile-widget').show(); container.find('.percentile-widget').removeClass('hidden'); }); });</script></span></div><div id="work-strip-premium-row-container"></div></div></div><script> require.config({ waitSeconds: 90 })(["https://a.academia-assets.com/assets/wow_profile-a9bf3a2bc8c89fa2a77156577594264ee8a0f214d74241bc0fcd3f69f8d107ac.js","https://a.academia-assets.com/assets/work_edit-ad038b8c047c1a8d4fa01b402d530ff93c45fee2137a149a4a5398bc8ad67560.js"], function() { // from javascript_helper.rb var dispatcherData = {} if (true){ window.WowProfile.dispatcher = window.WowProfile.dispatcher || _.clone(Backbone.Events); dispatcherData = { dispatcher: window.WowProfile.dispatcher, downloadLinkId: "b9bf13d91005181e461bb6e481081f1d" } } $('.js-work-strip[data-work-id=122447359]').each(function() { if (!$(this).data('initialized')) { new WowProfile.WorkStripView({ el: this, workJSON: {"id":122447359,"title":"Experimental investigation of the hydrodynamic performance of the ISWEC 1:20 scaled device","translated_title":"","metadata":{"grobid_abstract":"An experimental campaign test has performed on the 1:20 scaled moored model of ISWEC (Inertial Sea Wave Energy Converter). 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Recently, the new ISO 12215-5:2019 made notable changes to the way high-speed crafts are analysed, including extending the acceleration experienced up to 8 g in certain circumstances. Nevertheless, despite the multiple iterations and variety of regulatory bodies, the seminal work undertaken on planing crafts throughout the 1960s and 1970s remains the foundation of any rule-based design requirement. Consequently, this paper investigates an array of recently published rules though a comparative design case study, the current state-of-the-art across a number of regulations, and the ultimate impact on scantlings. The study reveals that, despite divergence in intermediate calculations and assumptions, similar requirements are ultimately achieved. Eventually, discussion on the comparison undertaken and future trends in high-speed marine vehicles is provided, tackling the relevance of classical planing theory in light of contemporary innovations.</span></div><div class="wp-workCard_item wp-workCard--actions"><span class="work-strip-bookmark-button-container"></span><span class="wp-workCard--action visible-if-viewed-by-owner inline-block" style="display: none;"><span class="js-profile-work-strip-edit-button-wrapper profile-work-strip-edit-button-wrapper" data-work-id="122447352"><a class="js-profile-work-strip-edit-button" tabindex="0"><span><i class="fa fa-pencil"></i></span><span>Edit</span></a></span></span></div><div class="wp-workCard_item wp-workCard--stats"><span><span><span class="js-view-count view-count u-mr2x" data-work-id="122447352"><i class="fa fa-spinner fa-spin"></i></span><script>$(function () { var workId = 122447352; window.Academia.workViewCountsFetcher.queue(workId, function (count) { var description = window.$h.commaizeInt(count) + " " + window.$h.pluralize(count, 'View'); $(".js-view-count[data-work-id=122447352]").text(description); $(".js-view-count[data-work-id=122447352]").attr('title', description).tooltip(); }); });</script></span></span><span><span class="percentile-widget hidden"><span class="u-mr2x work-percentile"></span></span><script>$(function () { var workId = 122447352; window.Academia.workPercentilesFetcher.queue(workId, function (percentileText) { var container = $(".js-work-strip[data-work-id='122447352']"); container.find('.work-percentile').text(percentileText.charAt(0).toUpperCase() + percentileText.slice(1)); container.find('.percentile-widget').show(); container.find('.percentile-widget').removeClass('hidden'); }); });</script></span></div><div id="work-strip-premium-row-container"></div></div></div><script> require.config({ waitSeconds: 90 })(["https://a.academia-assets.com/assets/wow_profile-a9bf3a2bc8c89fa2a77156577594264ee8a0f214d74241bc0fcd3f69f8d107ac.js","https://a.academia-assets.com/assets/work_edit-ad038b8c047c1a8d4fa01b402d530ff93c45fee2137a149a4a5398bc8ad67560.js"], function() { // from javascript_helper.rb var dispatcherData = {} if (false){ window.WowProfile.dispatcher = window.WowProfile.dispatcher || _.clone(Backbone.Events); dispatcherData = { dispatcher: window.WowProfile.dispatcher, downloadLinkId: "-1" } } $('.js-work-strip[data-work-id=122447352]').each(function() { if (!$(this).data('initialized')) { new WowProfile.WorkStripView({ el: this, workJSON: {"id":122447352,"title":"Comparative Assessment of Rule-Based Design on the Pressures and Resulting Scantlings of High Speed Powercrafts","translated_title":"","metadata":{"abstract":"The rules and regulations inherent to the design pressures and scantlings of high-speed powercrafts are numerous, and regularly reviewed. 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Eventually, discussion on the comparison undertaken and future trends in high-speed marine vehicles is provided, tackling the relevance of classical planing theory in light of contemporary innovations.","owner":{"id":3539088,"first_name":"Ermina","middle_initials":null,"last_name":"Begovic","page_name":"ErminaBegovic","domain_name":"unina","created_at":"2013-03-21T19:49:11.700-07:00","display_name":"Ermina Begovic","url":"https://unina.academia.edu/ErminaBegovic"},"attachments":[],"research_interests":[{"id":422,"name":"Computer Science","url":"https://www.academia.edu/Documents/in/Computer_Science"},{"id":152666,"name":"iOS","url":"https://www.academia.edu/Documents/in/iOS"}],"urls":[{"id":43739857,"url":"https://doi.org/10.3233/pmst200052"}]}, dispatcherData: dispatcherData }); $(this).data('initialized', true); } }); $a.trackClickSource(".js-work-strip-work-link", "profile_work_strip") if (false) { Aedu.setUpFigureCarousel('profile-work-122447352-figures'); } }); </script> <div class="js-work-strip profile--work_container" data-work-id="122447349"><div class="profile--work_thumbnail hidden-xs"><a class="js-work-strip-work-link" data-click-track="profile-work-strip-thumbnail" rel="nofollow" href="https://www.academia.edu/122447349/On_board_monitoring_and_estimation_of_lateral_accelerations_through_extreme_value_theory"><img alt="Research paper thumbnail of On-board monitoring and estimation of lateral accelerations through extreme value theory" class="work-thumbnail" src="https://a.academia-assets.com/images/blank-paper.jpg" /></a></div><div class="wp-workCard wp-workCard_itemContainer"><div class="wp-workCard_item wp-workCard--title">On-board monitoring and estimation of lateral accelerations through extreme value theory</div><div class="wp-workCard_item"><span>Ocean Engineering</span><span>, Sep 1, 2023</span></div><div class="wp-workCard_item wp-workCard--actions"><span class="work-strip-bookmark-button-container"></span><span class="wp-workCard--action visible-if-viewed-by-owner inline-block" style="display: none;"><span class="js-profile-work-strip-edit-button-wrapper profile-work-strip-edit-button-wrapper" data-work-id="122447349"><a class="js-profile-work-strip-edit-button" tabindex="0"><span><i class="fa fa-pencil"></i></span><span>Edit</span></a></span></span></div><div class="wp-workCard_item wp-workCard--stats"><span><span><span class="js-view-count view-count u-mr2x" data-work-id="122447349"><i class="fa fa-spinner fa-spin"></i></span><script>$(function () { var workId = 122447349; 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$(this).data('initialized', true); } }); $a.trackClickSource(".js-work-strip-work-link", "profile_work_strip") if (false) { Aedu.setUpFigureCarousel('profile-work-122447349-figures'); } }); </script> <div class="js-work-strip profile--work_container" data-work-id="122447346"><div class="profile--work_thumbnail hidden-xs"><a class="js-work-strip-work-link" data-click-track="profile-work-strip-thumbnail" rel="nofollow" href="https://www.academia.edu/122447346/Excessive_acceleration_simplified_Operational_Guidance"><img alt="Research paper thumbnail of Excessive acceleration simplified Operational Guidance" class="work-thumbnail" src="https://a.academia-assets.com/images/blank-paper.jpg" /></a></div><div class="wp-workCard wp-workCard_itemContainer"><div class="wp-workCard_item wp-workCard--title">Excessive acceleration simplified Operational Guidance</div><div class="wp-workCard_item"><span>International Journal of Naval Architecture and Ocean Engineering</span><span>, 2022</span></div><div class="wp-workCard_item wp-workCard--actions"><span class="work-strip-bookmark-button-container"></span><span class="wp-workCard--action visible-if-viewed-by-owner inline-block" style="display: none;"><span class="js-profile-work-strip-edit-button-wrapper profile-work-strip-edit-button-wrapper" data-work-id="122447346"><a class="js-profile-work-strip-edit-button" tabindex="0"><span><i class="fa fa-pencil"></i></span><span>Edit</span></a></span></span></div><div class="wp-workCard_item wp-workCard--stats"><span><span><span class="js-view-count view-count u-mr2x" data-work-id="122447346"><i class="fa fa-spinner fa-spin"></i></span><script>$(function () { var workId = 122447346; 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$(this).data('initialized', true); } }); $a.trackClickSource(".js-work-strip-work-link", "profile_work_strip") if (false) { Aedu.setUpFigureCarousel('profile-work-122447346-figures'); } }); </script> <div class="js-work-strip profile--work_container" data-work-id="122447344"><div class="profile--work_thumbnail hidden-xs"><a class="js-work-strip-work-link" data-click-track="profile-work-strip-thumbnail" href="https://www.academia.edu/122447344/Sailing_dinghy_hydrodynamic_resistance_by_experimental_and_numerical_assessments"><img alt="Research paper thumbnail of Sailing dinghy hydrodynamic resistance by experimental and numerical assessments" class="work-thumbnail" src="https://attachments.academia-assets.com/117108884/thumbnails/1.jpg" /></a></div><div class="wp-workCard wp-workCard_itemContainer"><div class="wp-workCard_item wp-workCard--title"><a class="js-work-strip-work-link text-gray-darker" data-click-track="profile-work-strip-title" href="https://www.academia.edu/122447344/Sailing_dinghy_hydrodynamic_resistance_by_experimental_and_numerical_assessments">Sailing dinghy hydrodynamic resistance by experimental and numerical assessments</a></div><div class="wp-workCard_item"><span>Ocean Engineering</span><span>, Oct 1, 2020</span></div><div class="wp-workCard_item"><span class="js-work-more-abstract-truncated">The International Space Station (ISS) Oxygen Generator Assembly (OGA) operational performance may...</span><a class="js-work-more-abstract" data-broccoli-component="work_strip.more_abstract" data-click-track="profile-work-strip-more-abstract" href="javascript:;"><span> more </span><span><i class="fa fa-caret-down"></i></span></a><span class="js-work-more-abstract-untruncated hidden">The International Space Station (ISS) Oxygen Generator Assembly (OGA) operational performance may be adversely impacted by microbiological growth and biofilm formation over the electrolysis cell membranes. Biofilms could hinder the transport of water from the bulk fluid stream to the membranes and increase the cell resistance resulting in higher cell voltages and a shorter cell life. A microbial challenge test was performed on duplicate single liquid cathode feed electrolyzer cells to evaluate operational performance with increasing levels of a mixture of five bacteria isolated from ISS and Space Shuttle potable water systems. Baseline performance of the single water electrolysis cells was determined for approximately one month with deionized water. Monthly performance was also determined following each inoculation of the feed tank with 100, 1000, 10,000 and 100,000 cells/ml of the mixed suspension of test bacteria. Water samples from the feed tank and recirculating water loops for each cell were periodically analyzed for enumeration and speciation of bacteria and total organic carbon. While initially a concern, this test program has demonstrated that the performance of the electrolysis cell is not adversely impacted by feed water containing the five species of bacteria tested at a concentration measured as high as 1,000,000 colony forming units (CFU)/ml. This paper presents the methodologies used in the conduct of this test program along with the performance test results at each level of bacteria concentration.</span></div><div class="wp-workCard_item wp-workCard--actions"><span class="work-strip-bookmark-button-container"></span><a id="e3f26a98a589ff3138776250d4e79dcc" class="wp-workCard--action" rel="nofollow" data-click-track="profile-work-strip-download" data-download="{"attachment_id":117108884,"asset_id":122447344,"asset_type":"Work","button_location":"profile"}" href="https://www.academia.edu/attachments/117108884/download_file?s=profile"><span><i class="fa fa-arrow-down"></i></span><span>Download</span></a><span class="wp-workCard--action visible-if-viewed-by-owner inline-block" style="display: none;"><span class="js-profile-work-strip-edit-button-wrapper profile-work-strip-edit-button-wrapper" data-work-id="122447344"><a class="js-profile-work-strip-edit-button" tabindex="0"><span><i class="fa fa-pencil"></i></span><span>Edit</span></a></span></span></div><div class="wp-workCard_item wp-workCard--stats"><span><span><span class="js-view-count view-count u-mr2x" data-work-id="122447344"><i class="fa fa-spinner fa-spin"></i></span><script>$(function () { var workId = 122447344; window.Academia.workViewCountsFetcher.queue(workId, function (count) { var description = window.$h.commaizeInt(count) + " " + window.$h.pluralize(count, 'View'); $(".js-view-count[data-work-id=122447344]").text(description); $(".js-view-count[data-work-id=122447344]").attr('title', description).tooltip(); }); });</script></span></span><span><span class="percentile-widget hidden"><span class="u-mr2x work-percentile"></span></span><script>$(function () { var workId = 122447344; window.Academia.workPercentilesFetcher.queue(workId, function (percentileText) { var container = $(".js-work-strip[data-work-id='122447344']"); container.find('.work-percentile').text(percentileText.charAt(0).toUpperCase() + percentileText.slice(1)); container.find('.percentile-widget').show(); container.find('.percentile-widget').removeClass('hidden'); }); });</script></span></div><div id="work-strip-premium-row-container"></div></div></div><script> require.config({ waitSeconds: 90 })(["https://a.academia-assets.com/assets/wow_profile-a9bf3a2bc8c89fa2a77156577594264ee8a0f214d74241bc0fcd3f69f8d107ac.js","https://a.academia-assets.com/assets/work_edit-ad038b8c047c1a8d4fa01b402d530ff93c45fee2137a149a4a5398bc8ad67560.js"], function() { // from javascript_helper.rb var dispatcherData = {} if (true){ window.WowProfile.dispatcher = window.WowProfile.dispatcher || _.clone(Backbone.Events); dispatcherData = { dispatcher: window.WowProfile.dispatcher, downloadLinkId: "e3f26a98a589ff3138776250d4e79dcc" } } $('.js-work-strip[data-work-id=122447344]').each(function() { if (!$(this).data('initialized')) { new WowProfile.WorkStripView({ el: this, workJSON: {"id":122447344,"title":"Sailing dinghy hydrodynamic resistance by experimental and numerical assessments","translated_title":"","metadata":{"publisher":"Elsevier BV","grobid_abstract":"The International Space Station (ISS) Oxygen Generator Assembly (OGA) operational performance may be adversely impacted by microbiological growth and biofilm formation over the electrolysis cell membranes. 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While initially a concern, this test program has demonstrated that the performance of the electrolysis cell is not adversely impacted by feed water containing the five species of bacteria tested at a concentration measured as high as 1,000,000 colony forming units (CFU)/ml. 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While initially a concern, this test program has demonstrated that the performance of the electrolysis cell is not adversely impacted by feed water containing the five species of bacteria tested at a concentration measured as high as 1,000,000 colony forming units (CFU)/ml. 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In this paper, surf-riding occurrence is studied for the parent hull of the Systematic Series D by 3 degrees of freedom (DOF) CFD simulations. Simulation cases are chosen following IMO recommendations for a wavelength to ship length range and following IMO criterion for ship speed cases. Initial conditions for simulations are obtained from 1-DOF surge motion equation solved by bifurcation analysis. The aim is to define surf-riding limits for ship operability with a less conservative approach, taking into account force changes in waves compared to the one used in the 1-DOF model, which considers calm water approximations. After defining surf-riding boundaries in terms of wave heights for different wavelengths and ship speeds, calculated forces are analysed to evaluate the magnitude and trend of non-linear effects due to wave elevation and ship-wave interaction. A detailed analysis is conducted on resistance, thrust, and wave forces in surging and surf-riding conditions, comparing the applied methodologies. The introduction of wave velocity field influence in the thrust force and the calculation of Froude-Krylov wave-force up to actual wave profile have been discussed and identified as possible improvements of 1-DOF approach.</span></div><div class="wp-workCard_item wp-workCard--actions"><span class="work-strip-bookmark-button-container"></span><a id="a4bbbac6d53612b9773f3e328414907a" class="wp-workCard--action" rel="nofollow" data-click-track="profile-work-strip-download" data-download="{"attachment_id":117108876,"asset_id":122447342,"asset_type":"Work","button_location":"profile"}" href="https://www.academia.edu/attachments/117108876/download_file?s=profile"><span><i class="fa fa-arrow-down"></i></span><span>Download</span></a><span class="wp-workCard--action visible-if-viewed-by-owner inline-block" style="display: none;"><span class="js-profile-work-strip-edit-button-wrapper profile-work-strip-edit-button-wrapper" data-work-id="122447342"><a class="js-profile-work-strip-edit-button" tabindex="0"><span><i class="fa fa-pencil"></i></span><span>Edit</span></a></span></span></div><div class="wp-workCard_item wp-workCard--stats"><span><span><span class="js-view-count view-count u-mr2x" data-work-id="122447342"><i class="fa fa-spinner fa-spin"></i></span><script>$(function () { var workId = 122447342; window.Academia.workViewCountsFetcher.queue(workId, function (count) { var description = window.$h.commaizeInt(count) + " " + window.$h.pluralize(count, 'View'); $(".js-view-count[data-work-id=122447342]").text(description); $(".js-view-count[data-work-id=122447342]").attr('title', description).tooltip(); }); });</script></span></span><span><span class="percentile-widget hidden"><span class="u-mr2x work-percentile"></span></span><script>$(function () { var workId = 122447342; window.Academia.workPercentilesFetcher.queue(workId, function (percentileText) { var container = $(".js-work-strip[data-work-id='122447342']"); container.find('.work-percentile').text(percentileText.charAt(0).toUpperCase() + percentileText.slice(1)); container.find('.percentile-widget').show(); container.find('.percentile-widget').removeClass('hidden'); }); });</script></span></div><div id="work-strip-premium-row-container"></div></div></div><script> require.config({ waitSeconds: 90 })(["https://a.academia-assets.com/assets/wow_profile-a9bf3a2bc8c89fa2a77156577594264ee8a0f214d74241bc0fcd3f69f8d107ac.js","https://a.academia-assets.com/assets/work_edit-ad038b8c047c1a8d4fa01b402d530ff93c45fee2137a149a4a5398bc8ad67560.js"], function() { // from javascript_helper.rb var dispatcherData = {} if (true){ window.WowProfile.dispatcher = window.WowProfile.dispatcher || _.clone(Backbone.Events); dispatcherData = { dispatcher: window.WowProfile.dispatcher, downloadLinkId: "a4bbbac6d53612b9773f3e328414907a" } } $('.js-work-strip[data-work-id=122447342]').each(function() { if (!$(this).data('initialized')) { new WowProfile.WorkStripView({ el: this, workJSON: {"id":122447342,"title":"CFD simulations for surf-riding occurrence assessment","translated_title":"","metadata":{"publisher":"Elsevier BV","ai_title_tag":"Assessing Surf-Riding Using CFD Simulations","grobid_abstract":"Surf-riding phenomenon occurs when a ship sailing in following waves is accelerated to wave celerity. 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A detailed analysis is conducted on resistance, thrust, and wave forces in surging and surf-riding conditions, comparing the applied methodologies. 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In this paper, surf-riding occurrence is studied for the parent hull of the Systematic Series D by 3 degrees of freedom (DOF) CFD simulations. Simulation cases are chosen following IMO recommendations for a wavelength to ship length range and following IMO criterion for ship speed cases. Initial conditions for simulations are obtained from 1-DOF surge motion equation solved by bifurcation analysis. The aim is to define surf-riding limits for ship operability with a less conservative approach, taking into account force changes in waves compared to the one used in the 1-DOF model, which considers calm water approximations. After defining surf-riding boundaries in terms of wave heights for different wavelengths and ship speeds, calculated forces are analysed to evaluate the magnitude and trend of non-linear effects due to wave elevation and ship-wave interaction. A detailed analysis is conducted on resistance, thrust, and wave forces in surging and surf-riding conditions, comparing the applied methodologies. The introduction of wave velocity field influence in the thrust force and the calculation of Froude-Krylov wave-force up to actual wave profile have been discussed and identified as possible improvements of 1-DOF approach.","owner":{"id":3539088,"first_name":"Ermina","middle_initials":null,"last_name":"Begovic","page_name":"ErminaBegovic","domain_name":"unina","created_at":"2013-03-21T19:49:11.700-07:00","display_name":"Ermina 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Science","url":"https://www.academia.edu/Documents/in/Computer_Science"},{"id":403398,"name":"Hull","url":"https://www.academia.edu/Documents/in/Hull"},{"id":1222385,"name":"service Business","url":"https://www.academia.edu/Documents/in/service_Business"}],"urls":[{"id":43739850,"url":"https://www.mdpi.com/2077-1312/11/3/495/pdf?version=1677486487"}]}, dispatcherData: dispatcherData }); $(this).data('initialized', true); } }); $a.trackClickSource(".js-work-strip-work-link", "profile_work_strip") if (false) { Aedu.setUpFigureCarousel('profile-work-122447340-figures'); } }); </script> <div class="js-work-strip profile--work_container" data-work-id="122447336"><div class="profile--work_thumbnail hidden-xs"><a class="js-work-strip-work-link" data-click-track="profile-work-strip-thumbnail" rel="nofollow" href="https://www.academia.edu/122447336/Low_resistance_hull_form_for_sustainable_pleasure_craft"><img alt="Research paper thumbnail of Low resistance hull form for sustainable pleasure craft" class="work-thumbnail" src="https://a.academia-assets.com/images/blank-paper.jpg" /></a></div><div class="wp-workCard wp-workCard_itemContainer"><div class="wp-workCard_item wp-workCard--title">Low resistance hull form for sustainable pleasure craft</div><div class="wp-workCard_item wp-workCard--actions"><span class="work-strip-bookmark-button-container"></span><span class="wp-workCard--action visible-if-viewed-by-owner inline-block" style="display: none;"><span class="js-profile-work-strip-edit-button-wrapper profile-work-strip-edit-button-wrapper" data-work-id="122447336"><a class="js-profile-work-strip-edit-button" tabindex="0"><span><i class="fa fa-pencil"></i></span><span>Edit</span></a></span></span></div><div class="wp-workCard_item wp-workCard--stats"><span><span><span class="js-view-count view-count u-mr2x" data-work-id="122447336"><i class="fa fa-spinner fa-spin"></i></span><script>$(function () { var workId = 122447336; 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})(["https://a.academia-assets.com/assets/wow_profile-a9bf3a2bc8c89fa2a77156577594264ee8a0f214d74241bc0fcd3f69f8d107ac.js","https://a.academia-assets.com/assets/work_edit-ad038b8c047c1a8d4fa01b402d530ff93c45fee2137a149a4a5398bc8ad67560.js"], function() { // from javascript_helper.rb var dispatcherData = {} if (false){ window.WowProfile.dispatcher = window.WowProfile.dispatcher || _.clone(Backbone.Events); dispatcherData = { dispatcher: window.WowProfile.dispatcher, downloadLinkId: "-1" } } $('.js-work-strip[data-work-id=122447336]').each(function() { if (!$(this).data('initialized')) { new WowProfile.WorkStripView({ el: this, workJSON: {"id":122447336,"title":"Low resistance hull form for sustainable pleasure 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href="https://www.academia.edu/122447331/Vulnerability_assessment_of_surf_riding_broaching_and_pure_loss_of_stability_for_Systematic_Series_D1_model"><img alt="Research paper thumbnail of Vulnerability assessment of surf-riding-broaching and pure loss of stability for Systematic Series D1 model" class="work-thumbnail" src="https://attachments.academia-assets.com/117108875/thumbnails/1.jpg" /></a></div><div class="wp-workCard wp-workCard_itemContainer"><div class="wp-workCard_item wp-workCard--title"><a class="js-work-strip-work-link text-gray-darker" data-click-track="profile-work-strip-title" href="https://www.academia.edu/122447331/Vulnerability_assessment_of_surf_riding_broaching_and_pure_loss_of_stability_for_Systematic_Series_D1_model">Vulnerability assessment of surf-riding-broaching and pure loss of stability for Systematic Series D1 model</a></div><div class="wp-workCard_item"><span>Ships and Offshore Structures</span><span>, Mar 27, 2019</span></div><div class="wp-workCard_item"><span class="js-work-more-abstract-truncated">This paper is focused on the first and second level vulnerability assessment of Surf riding/Broac...</span><a class="js-work-more-abstract" data-broccoli-component="work_strip.more_abstract" data-click-track="profile-work-strip-more-abstract" href="javascript:;"><span> more </span><span><i class="fa fa-caret-down"></i></span></a><span class="js-work-more-abstract-untruncated hidden">This paper is focused on the first and second level vulnerability assessment of Surf riding/Broaching and Pure Loss of Stability Criteria according to IMO second generation intact stability criteria. The calculations are performed for the semi-displacement twin-screw round-bilge hull form model D1 of the Systematic Series D. This model has hull form and service speed representative of corvettes built in 90-ties. The considered loading condition is obtained from Italian Navy ships statistics. Both criteria are analysed for different operational characteristics to evaluate the speed limits where the ship is not vulnerable. Model D1 is found to be vulnerable to both failure modes at service speed. Performing 2nd level of both criteria 'safe' speed is around 19 knots for surf-riding and around 15, 5 knots for pure loss. The obtained results are commented and compared against similar ships from the relevant state of the art papers.</span></div><div class="wp-workCard_item wp-workCard--actions"><span class="work-strip-bookmark-button-container"></span><a id="62cb5d811d8ca935d3ba7c274e75359b" class="wp-workCard--action" rel="nofollow" data-click-track="profile-work-strip-download" data-download="{"attachment_id":117108875,"asset_id":122447331,"asset_type":"Work","button_location":"profile"}" href="https://www.academia.edu/attachments/117108875/download_file?s=profile"><span><i class="fa fa-arrow-down"></i></span><span>Download</span></a><span class="wp-workCard--action visible-if-viewed-by-owner inline-block" style="display: none;"><span class="js-profile-work-strip-edit-button-wrapper profile-work-strip-edit-button-wrapper" data-work-id="122447331"><a class="js-profile-work-strip-edit-button" tabindex="0"><span><i class="fa fa-pencil"></i></span><span>Edit</span></a></span></span></div><div class="wp-workCard_item wp-workCard--stats"><span><span><span class="js-view-count view-count u-mr2x" data-work-id="122447331"><i class="fa fa-spinner fa-spin"></i></span><script>$(function () { var workId = 122447331; window.Academia.workViewCountsFetcher.queue(workId, function (count) { var description = window.$h.commaizeInt(count) + " " + window.$h.pluralize(count, 'View'); $(".js-view-count[data-work-id=122447331]").text(description); $(".js-view-count[data-work-id=122447331]").attr('title', description).tooltip(); }); });</script></span></span><span><span class="percentile-widget hidden"><span class="u-mr2x work-percentile"></span></span><script>$(function () { var workId = 122447331; window.Academia.workPercentilesFetcher.queue(workId, function (percentileText) { var container = $(".js-work-strip[data-work-id='122447331']"); container.find('.work-percentile').text(percentileText.charAt(0).toUpperCase() + percentileText.slice(1)); container.find('.percentile-widget').show(); container.find('.percentile-widget').removeClass('hidden'); }); });</script></span></div><div id="work-strip-premium-row-container"></div></div></div><script> require.config({ waitSeconds: 90 })(["https://a.academia-assets.com/assets/wow_profile-a9bf3a2bc8c89fa2a77156577594264ee8a0f214d74241bc0fcd3f69f8d107ac.js","https://a.academia-assets.com/assets/work_edit-ad038b8c047c1a8d4fa01b402d530ff93c45fee2137a149a4a5398bc8ad67560.js"], function() { // from javascript_helper.rb var dispatcherData = {} if (true){ window.WowProfile.dispatcher = window.WowProfile.dispatcher || _.clone(Backbone.Events); dispatcherData = { dispatcher: window.WowProfile.dispatcher, downloadLinkId: "62cb5d811d8ca935d3ba7c274e75359b" } } $('.js-work-strip[data-work-id=122447331]').each(function() { if (!$(this).data('initialized')) { new WowProfile.WorkStripView({ el: this, workJSON: {"id":122447331,"title":"Vulnerability assessment of surf-riding-broaching and pure loss of stability for Systematic Series D1 model","translated_title":"","metadata":{"publisher":"Taylor \u0026 Francis","grobid_abstract":"This paper is focused on the first and second level vulnerability assessment of Surf riding/Broaching and Pure Loss of Stability Criteria according to IMO second generation intact stability criteria. 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The obtained results are commented and compared against similar ships from the relevant state of the art papers.","owner":{"id":3539088,"first_name":"Ermina","middle_initials":null,"last_name":"Begovic","page_name":"ErminaBegovic","domain_name":"unina","created_at":"2013-03-21T19:49:11.700-07:00","display_name":"Ermina Begovic","url":"https://unina.academia.edu/ErminaBegovic"},"attachments":[{"id":117108875,"title":"","file_type":"pdf","scribd_thumbnail_url":"https://attachments.academia-assets.com/117108875/thumbnails/1.jpg","file_name":"17445302.2019.159654520240730-1-llguo0.pdf","download_url":"https://www.academia.edu/attachments/117108875/download_file","bulk_download_file_name":"Vulnerability_assessment_of_surf_riding.pdf","bulk_download_url":"https://d1wqtxts1xzle7.cloudfront.net/117108875/17445302.2019.159654520240730-1-llguo0-libre.pdf?1722327197=\u0026response-content-disposition=attachment%3B+filename%3DVulnerability_assessment_of_surf_riding.pdf\u0026Expires=1743461260\u0026Signature=a5u8Jd2Um3S6OLdxmDhXRcU~DLnZZhI1Wpf6SB5NX8~AUukD7sEMmhOIosuysAijVSVIY09oxnzkQ0Ak2Iocw3aAXt1AtNvG0my01CjeaHyjjdv-OWIBoTlgpDVxiGH6DTglsJ7jBKnxBsTTl2LbQ3WalMKceNw~DPm0kNd9F3~2DO-ti5V6GEvhUn9eK2hr5l2u3g-3sC-gbP5p16ARng8D0~HGG51fsXAm7~Bmm1LdUZYENzsIaaQaUyrLGT0DIheNC2KLMeLy-p4lyLTmcPuc6A2eA6f9AvQaeSvEbqw5fGbSO2QJTymklwjZGGsDddY247zEf~rT40IQJ8khZA__\u0026Key-Pair-Id=APKAJLOHF5GGSLRBV4ZA"}],"research_interests":[{"id":422,"name":"Computer Science","url":"https://www.academia.edu/Documents/in/Computer_Science"},{"id":299504,"name":"Ships and Offshore Structures","url":"https://www.academia.edu/Documents/in/Ships_and_Offshore_Structures"},{"id":403398,"name":"Hull","url":"https://www.academia.edu/Documents/in/Hull"},{"id":471104,"name":"Maritime Engineering","url":"https://www.academia.edu/Documents/in/Maritime_Engineering"}],"urls":[{"id":43739847,"url":"https://doi.org/10.1080/17445302.2019.1596545"}]}, dispatcherData: dispatcherData }); $(this).data('initialized', true); } }); $a.trackClickSource(".js-work-strip-work-link", "profile_work_strip") if (false) { Aedu.setUpFigureCarousel('profile-work-122447331-figures'); } }); </script> <div class="js-work-strip profile--work_container" data-work-id="122447327"><div class="profile--work_thumbnail hidden-xs"><a class="js-work-strip-work-link" data-click-track="profile-work-strip-thumbnail" href="https://www.academia.edu/122447327/A_Fast_Simulation_Method_for_Damaged_and_x0D_Ship_Dynamics_and_x0D"><img alt="Research paper thumbnail of A Fast Simulation Method for Damaged &#x0D; Ship Dynamics&#x0D" class="work-thumbnail" src="https://attachments.academia-assets.com/117108854/thumbnails/1.jpg" /></a></div><div class="wp-workCard wp-workCard_itemContainer"><div class="wp-workCard_item wp-workCard--title"><a class="js-work-strip-work-link text-gray-darker" data-click-track="profile-work-strip-title" href="https://www.academia.edu/122447327/A_Fast_Simulation_Method_for_Damaged_and_x0D_Ship_Dynamics_and_x0D">A Fast Simulation Method for Damaged &#x0D; Ship Dynamics&#x0D</a></div><div class="wp-workCard_item"><span>Journal of Marine Science and Engineering</span><span>, Apr 19, 2019</span></div><div class="wp-workCard_item"><span class="js-work-more-abstract-truncated">Ship accidents that entail flooding may lead to disastrous consequences which could be avoided or...</span><a class="js-work-more-abstract" data-broccoli-component="work_strip.more_abstract" data-click-track="profile-work-strip-more-abstract" href="javascript:;"><span> more </span><span><i class="fa fa-caret-down"></i></span></a><span class="js-work-more-abstract-untruncated hidden">Ship accidents that entail flooding may lead to disastrous consequences which could be avoided or mitigated based on the knowledge of damaged ship dynamics. The dynamic behaviour of a damaged hull is a complex phenomenon involving the interaction of the flooded water and the ship motions. The presence of a damage opening allows water flow into and out from the compartment, which further complicates the mathematical description of the problem. A fast simulation method, based on the lumped mass approach, is developed and presented. The lumped mass path in space depends on free-surface inclinations that differ from the ship angles of the roll and pitch. The viscous effects in the floodwater dynamics are implemented based on the model for the dissipation of the energy of standing waves in rectangular rooms. The method applies to both the transient stage of flooding and to the dynamic behaviour of a flooded ship in regular waves. In the first case, viscous effects are implemented considering the water in the compartment variable with time. Several case studies are carried out on three different hull models: Transient stage of flooding, roll decay of the damaged hull, and steady state responses in waves are simulated and compared with available experimental data.</span></div><div class="wp-workCard_item wp-workCard--actions"><span class="work-strip-bookmark-button-container"></span><a id="1b5ca35feb9d84046b81abf26ff3fa0d" class="wp-workCard--action" rel="nofollow" data-click-track="profile-work-strip-download" data-download="{"attachment_id":117108854,"asset_id":122447327,"asset_type":"Work","button_location":"profile"}" href="https://www.academia.edu/attachments/117108854/download_file?s=profile"><span><i class="fa fa-arrow-down"></i></span><span>Download</span></a><span class="wp-workCard--action visible-if-viewed-by-owner inline-block" style="display: none;"><span class="js-profile-work-strip-edit-button-wrapper profile-work-strip-edit-button-wrapper" data-work-id="122447327"><a class="js-profile-work-strip-edit-button" tabindex="0"><span><i class="fa fa-pencil"></i></span><span>Edit</span></a></span></span></div><div class="wp-workCard_item wp-workCard--stats"><span><span><span class="js-view-count view-count u-mr2x" data-work-id="122447327"><i class="fa fa-spinner fa-spin"></i></span><script>$(function () { var workId = 122447327; window.Academia.workViewCountsFetcher.queue(workId, function (count) { var description = window.$h.commaizeInt(count) + " " + window.$h.pluralize(count, 'View'); $(".js-view-count[data-work-id=122447327]").text(description); $(".js-view-count[data-work-id=122447327]").attr('title', description).tooltip(); }); });</script></span></span><span><span class="percentile-widget hidden"><span class="u-mr2x work-percentile"></span></span><script>$(function () { var workId = 122447327; window.Academia.workPercentilesFetcher.queue(workId, function (percentileText) { var container = $(".js-work-strip[data-work-id='122447327']"); container.find('.work-percentile').text(percentileText.charAt(0).toUpperCase() + percentileText.slice(1)); container.find('.percentile-widget').show(); container.find('.percentile-widget').removeClass('hidden'); }); });</script></span></div><div id="work-strip-premium-row-container"></div></div></div><script> require.config({ waitSeconds: 90 })(["https://a.academia-assets.com/assets/wow_profile-a9bf3a2bc8c89fa2a77156577594264ee8a0f214d74241bc0fcd3f69f8d107ac.js","https://a.academia-assets.com/assets/work_edit-ad038b8c047c1a8d4fa01b402d530ff93c45fee2137a149a4a5398bc8ad67560.js"], function() { // from javascript_helper.rb var dispatcherData = {} if (true){ window.WowProfile.dispatcher = window.WowProfile.dispatcher || _.clone(Backbone.Events); dispatcherData = { dispatcher: window.WowProfile.dispatcher, downloadLinkId: "1b5ca35feb9d84046b81abf26ff3fa0d" } } $('.js-work-strip[data-work-id=122447327]').each(function() { if (!$(this).data('initialized')) { new WowProfile.WorkStripView({ el: this, workJSON: {"id":122447327,"title":"A Fast Simulation Method for Damaged \u0026#x0D; Ship Dynamics\u0026#x0D","translated_title":"","metadata":{"publisher":"Multidisciplinary Digital Publishing Institute","ai_title_tag":"Fast Simulation of Flooded Ship Dynamics","grobid_abstract":"Ship accidents that entail flooding may lead to disastrous consequences which could be avoided or mitigated based on the knowledge of damaged ship dynamics. 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The dynamic behaviour of a damaged hull is a complex phenomenon involving the interaction of the flooded water and the ship motions. The presence of a damage opening allows water flow into and out from the compartment, which further complicates the mathematical description of the problem. A fast simulation method, based on the lumped mass approach, is developed and presented. The lumped mass path in space depends on free-surface inclinations that differ from the ship angles of the roll and pitch. The viscous effects in the floodwater dynamics are implemented based on the model for the dissipation of the energy of standing waves in rectangular rooms. The method applies to both the transient stage of flooding and to the dynamic behaviour of a flooded ship in regular waves. In the first case, viscous effects are implemented considering the water in the compartment variable with time. 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$(this).data('initialized', true); } }); $a.trackClickSource(".js-work-strip-work-link", "profile_work_strip") if (false) { Aedu.setUpFigureCarousel('profile-work-122447327-figures'); } }); </script> <div class="js-work-strip profile--work_container" data-work-id="122447323"><div class="profile--work_thumbnail hidden-xs"><a class="js-work-strip-work-link" data-click-track="profile-work-strip-thumbnail" rel="nofollow" href="https://www.academia.edu/122447323/FOILING_AROUND_THE_WORLD_first_lessons_learned_from_vendee_globe"><img alt="Research paper thumbnail of FOILING AROUND THE WORLD, first lessons learned from vendee globe" class="work-thumbnail" src="https://a.academia-assets.com/images/blank-paper.jpg" /></a></div><div class="wp-workCard wp-workCard_itemContainer"><div class="wp-workCard_item wp-workCard--title">FOILING AROUND THE WORLD, first lessons learned from vendee globe</div><div class="wp-workCard_item wp-workCard--actions"><span class="work-strip-bookmark-button-container"></span><span class="wp-workCard--action visible-if-viewed-by-owner inline-block" style="display: none;"><span class="js-profile-work-strip-edit-button-wrapper profile-work-strip-edit-button-wrapper" data-work-id="122447323"><a class="js-profile-work-strip-edit-button" tabindex="0"><span><i class="fa fa-pencil"></i></span><span>Edit</span></a></span></span></div><div class="wp-workCard_item wp-workCard--stats"><span><span><span class="js-view-count view-count u-mr2x" data-work-id="122447323"><i class="fa fa-spinner fa-spin"></i></span><script>$(function () { var workId = 122447323; 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$(this).data('initialized', true); } }); $a.trackClickSource(".js-work-strip-work-link", "profile_work_strip") if (false) { Aedu.setUpFigureCarousel('profile-work-122447323-figures'); } }); </script> <div class="js-work-strip profile--work_container" data-work-id="122447321"><div class="profile--work_thumbnail hidden-xs"><a class="js-work-strip-work-link" data-click-track="profile-work-strip-thumbnail" rel="nofollow" href="https://www.academia.edu/122447321/On_the_Effect_of_Viscous_Forces_on_the_Motion_of_High_Speed_Hulls"><img alt="Research paper thumbnail of On the Effect of Viscous Forces on the Motion of High Speed Hulls" class="work-thumbnail" src="https://a.academia-assets.com/images/blank-paper.jpg" /></a></div><div class="wp-workCard wp-workCard_itemContainer"><div class="wp-workCard_item wp-workCard--title">On the Effect of Viscous Forces on the Motion of High Speed Hulls</div><div class="wp-workCard_item"><span class="js-work-more-abstract-truncated">For fast slender hullforms, the damping forces due to the generated waves are so small that the d...</span><a class="js-work-more-abstract" data-broccoli-component="work_strip.more_abstract" data-click-track="profile-work-strip-more-abstract" href="javascript:;"><span> more </span><span><i class="fa fa-caret-down"></i></span></a><span class="js-work-more-abstract-untruncated hidden">For fast slender hullforms, the damping forces due to the generated waves are so small that the damping forces relative to viscosity cannot be neglected in evaluating the vertical motions. In this paper the numerical and experimental assessment of the vertical motions in head sea for three mono-hulls are presented. The considered hulls are fast slender displacement type with transom stern and L/B ratios 14, 12, 8. The most slender hull is a trimaran main hull, the second one is a catamaran demihull and the last one is the Model 5 (Blok and Beukelman, 1984). The calculations were performed using 2 \\ubd D high speed theory by Faltinsen and Zhao (1991). To obtain potential flow theory results the viscosity correction from the cross flow was added. The effect of the viscosity from cross flow was considered as reported by Lee (1977), Chan (1992), Centeno (2000). At the Trieste towing tank experimental program was conducted for the catamaran demihull and the trimaran main hull for four different speeds while for the Model 5 experimental data were collected from the literature. The effect of cross flow coefficients is evaluated and discussed, and empirical coefficients are set. Furthermore, the influence of slenderness ratio and speed is discussed and finally some conclusions are given</span></div><div class="wp-workCard_item wp-workCard--actions"><span class="work-strip-bookmark-button-container"></span><span class="wp-workCard--action visible-if-viewed-by-owner inline-block" style="display: none;"><span class="js-profile-work-strip-edit-button-wrapper profile-work-strip-edit-button-wrapper" data-work-id="122447321"><a class="js-profile-work-strip-edit-button" tabindex="0"><span><i class="fa fa-pencil"></i></span><span>Edit</span></a></span></span></div><div class="wp-workCard_item wp-workCard--stats"><span><span><span class="js-view-count view-count u-mr2x" data-work-id="122447321"><i class="fa fa-spinner fa-spin"></i></span><script>$(function () { var workId = 122447321; window.Academia.workViewCountsFetcher.queue(workId, function (count) { var description = window.$h.commaizeInt(count) + " " + window.$h.pluralize(count, 'View'); $(".js-view-count[data-work-id=122447321]").text(description); $(".js-view-count[data-work-id=122447321]").attr('title', description).tooltip(); }); });</script></span></span><span><span class="percentile-widget hidden"><span class="u-mr2x work-percentile"></span></span><script>$(function () { var workId = 122447321; window.Academia.workPercentilesFetcher.queue(workId, function (percentileText) { var container = $(".js-work-strip[data-work-id='122447321']"); container.find('.work-percentile').text(percentileText.charAt(0).toUpperCase() + percentileText.slice(1)); container.find('.percentile-widget').show(); container.find('.percentile-widget').removeClass('hidden'); }); });</script></span></div><div id="work-strip-premium-row-container"></div></div></div><script> require.config({ waitSeconds: 90 })(["https://a.academia-assets.com/assets/wow_profile-a9bf3a2bc8c89fa2a77156577594264ee8a0f214d74241bc0fcd3f69f8d107ac.js","https://a.academia-assets.com/assets/work_edit-ad038b8c047c1a8d4fa01b402d530ff93c45fee2137a149a4a5398bc8ad67560.js"], function() { // from javascript_helper.rb var dispatcherData = {} if (false){ window.WowProfile.dispatcher = window.WowProfile.dispatcher || _.clone(Backbone.Events); dispatcherData = { dispatcher: window.WowProfile.dispatcher, downloadLinkId: "-1" } } $('.js-work-strip[data-work-id=122447321]').each(function() { if (!$(this).data('initialized')) { new WowProfile.WorkStripView({ el: this, workJSON: {"id":122447321,"title":"On the Effect of Viscous Forces on the Motion of High Speed Hulls","translated_title":"","metadata":{"abstract":"For fast slender hullforms, the damping forces due to the generated waves are so small that the damping forces relative to viscosity cannot be neglected in evaluating the vertical motions. In this paper the numerical and experimental assessment of the vertical motions in head sea for three mono-hulls are presented. The considered hulls are fast slender displacement type with transom stern and L/B ratios 14, 12, 8. The most slender hull is a trimaran main hull, the second one is a catamaran demihull and the last one is the Model 5 (Blok and Beukelman, 1984). The calculations were performed using 2 \\\\ubd D high speed theory by Faltinsen and Zhao (1991). To obtain potential flow theory results the viscosity correction from the cross flow was added. The effect of the viscosity from cross flow was considered as reported by Lee (1977), Chan (1992), Centeno (2000). At the Trieste towing tank experimental program was conducted for the catamaran demihull and the trimaran main hull for four different speeds while for the Model 5 experimental data were collected from the literature. The effect of cross flow coefficients is evaluated and discussed, and empirical coefficients are set. Furthermore, the influence of slenderness ratio and speed is discussed and finally some conclusions are given","publication_date":{"day":null,"month":null,"year":2002,"errors":{}}},"translated_abstract":"For fast slender hullforms, the damping forces due to the generated waves are so small that the damping forces relative to viscosity cannot be neglected in evaluating the vertical motions. In this paper the numerical and experimental assessment of the vertical motions in head sea for three mono-hulls are presented. The considered hulls are fast slender displacement type with transom stern and L/B ratios 14, 12, 8. The most slender hull is a trimaran main hull, the second one is a catamaran demihull and the last one is the Model 5 (Blok and Beukelman, 1984). The calculations were performed using 2 \\\\ubd D high speed theory by Faltinsen and Zhao (1991). To obtain potential flow theory results the viscosity correction from the cross flow was added. The effect of the viscosity from cross flow was considered as reported by Lee (1977), Chan (1992), Centeno (2000). At the Trieste towing tank experimental program was conducted for the catamaran demihull and the trimaran main hull for four different speeds while for the Model 5 experimental data were collected from the literature. The effect of cross flow coefficients is evaluated and discussed, and empirical coefficients are set. Furthermore, the influence of slenderness ratio and speed is discussed and finally some conclusions are given","internal_url":"https://www.academia.edu/122447321/On_the_Effect_of_Viscous_Forces_on_the_Motion_of_High_Speed_Hulls","translated_internal_url":"","created_at":"2024-07-30T00:17:18.582-07:00","preview_url":null,"current_user_can_edit":null,"current_user_is_owner":null,"owner_id":3539088,"coauthors_can_edit":true,"document_type":"paper","co_author_tags":[],"downloadable_attachments":[],"slug":"On_the_Effect_of_Viscous_Forces_on_the_Motion_of_High_Speed_Hulls","translated_slug":"","page_count":null,"language":"en","content_type":"Work","summary":"For fast slender hullforms, the damping forces due to the generated waves are so small that the damping forces relative to viscosity cannot be neglected in evaluating the vertical motions. In this paper the numerical and experimental assessment of the vertical motions in head sea for three mono-hulls are presented. The considered hulls are fast slender displacement type with transom stern and L/B ratios 14, 12, 8. The most slender hull is a trimaran main hull, the second one is a catamaran demihull and the last one is the Model 5 (Blok and Beukelman, 1984). The calculations were performed using 2 \\\\ubd D high speed theory by Faltinsen and Zhao (1991). To obtain potential flow theory results the viscosity correction from the cross flow was added. The effect of the viscosity from cross flow was considered as reported by Lee (1977), Chan (1992), Centeno (2000). At the Trieste towing tank experimental program was conducted for the catamaran demihull and the trimaran main hull for four different speeds while for the Model 5 experimental data were collected from the literature. The effect of cross flow coefficients is evaluated and discussed, and empirical coefficients are set. 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Semi-empirical methods used by classification societies for vertical acceleration assessment are scrutinized. Insights from model experiments performed at the University of Naples "Federico II" (UNINA) and simulations performed at the Royal Institute of Technology (KTH) are presented. Deficiencies of the prevailing semi-empirical methods, and challenges and opportunities with a combined experimental-numerical approach, are discussed in perspective of the IMO high-speed craft safety philosophy.</span></div><div class="wp-workCard_item wp-workCard--actions"><span class="work-strip-bookmark-button-container"></span><a id="c1547c74e800b7e86cdb7b0c82a00452" class="wp-workCard--action" rel="nofollow" data-click-track="profile-work-strip-download" data-download="{"attachment_id":117108883,"asset_id":122447363,"asset_type":"Work","button_location":"profile"}" href="https://www.academia.edu/attachments/117108883/download_file?s=profile"><span><i class="fa fa-arrow-down"></i></span><span>Download</span></a><span class="wp-workCard--action visible-if-viewed-by-owner inline-block" style="display: none;"><span class="js-profile-work-strip-edit-button-wrapper profile-work-strip-edit-button-wrapper" data-work-id="122447363"><a class="js-profile-work-strip-edit-button" tabindex="0"><span><i class="fa fa-pencil"></i></span><span>Edit</span></a></span></span></div><div class="wp-workCard_item wp-workCard--stats"><span><span><span class="js-view-count view-count u-mr2x" data-work-id="122447363"><i class="fa fa-spinner fa-spin"></i></span><script>$(function () { var workId = 122447363; window.Academia.workViewCountsFetcher.queue(workId, function (count) { var description = window.$h.commaizeInt(count) + " " + window.$h.pluralize(count, 'View'); $(".js-view-count[data-work-id=122447363]").text(description); $(".js-view-count[data-work-id=122447363]").attr('title', description).tooltip(); }); });</script></span></span><span><span class="percentile-widget hidden"><span class="u-mr2x work-percentile"></span></span><script>$(function () { var workId = 122447363; window.Academia.workPercentilesFetcher.queue(workId, function (percentileText) { var container = $(".js-work-strip[data-work-id='122447363']"); container.find('.work-percentile').text(percentileText.charAt(0).toUpperCase() + percentileText.slice(1)); container.find('.percentile-widget').show(); container.find('.percentile-widget').removeClass('hidden'); }); });</script></span></div><div id="work-strip-premium-row-container"></div></div></div><script> require.config({ waitSeconds: 90 })(["https://a.academia-assets.com/assets/wow_profile-a9bf3a2bc8c89fa2a77156577594264ee8a0f214d74241bc0fcd3f69f8d107ac.js","https://a.academia-assets.com/assets/work_edit-ad038b8c047c1a8d4fa01b402d530ff93c45fee2137a149a4a5398bc8ad67560.js"], function() { // from javascript_helper.rb var dispatcherData = {} if (true){ window.WowProfile.dispatcher = window.WowProfile.dispatcher || _.clone(Backbone.Events); dispatcherData = { dispatcher: window.WowProfile.dispatcher, downloadLinkId: "c1547c74e800b7e86cdb7b0c82a00452" } } $('.js-work-strip[data-work-id=122447363]').each(function() { if (!$(this).data('initialized')) { new WowProfile.WorkStripView({ el: this, workJSON: {"id":122447363,"title":"High-speed craft dynamics in waves: challenges and opportunities related to the current safety philosophy","translated_title":"","metadata":{"grobid_abstract":"This paper considers the assessment of vertical accelerations of high speed planing craft in waves as the principal element for the risk management approach, i.e. formulation and application of operational limitations and operational guidance. 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Semi-empirical methods used by classification societies for vertical acceleration assessment are scrutinized. Insights from model experiments performed at the University of Naples \"Federico II\" (UNINA) and simulations performed at the Royal Institute of Technology (KTH) are presented. 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$(this).data('initialized', true); } }); $a.trackClickSource(".js-work-strip-work-link", "profile_work_strip") if (false) { Aedu.setUpFigureCarousel('profile-work-122447363-figures'); } }); </script> <div class="js-work-strip profile--work_container" data-work-id="122447362"><div class="profile--work_thumbnail hidden-xs"><a class="js-work-strip-work-link" data-click-track="profile-work-strip-thumbnail" rel="nofollow" href="https://www.academia.edu/122447362/High_Speed_Multihull_Craft_for_Medium_Distance_Marine_Transportation"><img alt="Research paper thumbnail of High Speed Multihull Craft for Medium Distance Marine Transportation" class="work-thumbnail" src="https://a.academia-assets.com/images/blank-paper.jpg" /></a></div><div class="wp-workCard wp-workCard_itemContainer"><div class="wp-workCard_item wp-workCard--title">High Speed Multihull Craft for Medium Distance Marine Transportation</div><div class="wp-workCard_item wp-workCard--actions"><span class="work-strip-bookmark-button-container"></span><span class="wp-workCard--action visible-if-viewed-by-owner inline-block" style="display: none;"><span class="js-profile-work-strip-edit-button-wrapper profile-work-strip-edit-button-wrapper" data-work-id="122447362"><a class="js-profile-work-strip-edit-button" tabindex="0"><span><i class="fa fa-pencil"></i></span><span>Edit</span></a></span></span></div><div class="wp-workCard_item wp-workCard--stats"><span><span><span class="js-view-count view-count u-mr2x" data-work-id="122447362"><i class="fa fa-spinner fa-spin"></i></span><script>$(function () { var workId = 122447362; 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$(this).data('initialized', true); } }); $a.trackClickSource(".js-work-strip-work-link", "profile_work_strip") if (false) { Aedu.setUpFigureCarousel('profile-work-122447362-figures'); } }); </script> <div class="js-work-strip profile--work_container" data-work-id="122447360"><div class="profile--work_thumbnail hidden-xs"><a class="js-work-strip-work-link" data-click-track="profile-work-strip-thumbnail" rel="nofollow" href="https://www.academia.edu/122447360/Zero_emission_sustainable_craft_for_coastal_Marine_Protected_Areas"><img alt="Research paper thumbnail of Zero emission sustainable craft for coastal Marine Protected Areas" class="work-thumbnail" src="https://a.academia-assets.com/images/blank-paper.jpg" /></a></div><div class="wp-workCard wp-workCard_itemContainer"><div class="wp-workCard_item wp-workCard--title">Zero emission sustainable craft for coastal Marine Protected Areas</div><div class="wp-workCard_item"><span class="js-work-more-abstract-truncated">This paper presents the results obtained by MArine HYdrodynamics Research Group of Department of ...</span><a class="js-work-more-abstract" data-broccoli-component="work_strip.more_abstract" data-click-track="profile-work-strip-more-abstract" href="javascript:;"><span> more </span><span><i class="fa fa-caret-down"></i></span></a><span class="js-work-more-abstract-untruncated hidden">This paper presents the results obtained by MArine HYdrodynamics Research Group of Department of Industrial Engineering (DII) at University of Naples regarding design and development of a zero emission craft for service in Mediterranean coastal Marine Protected Areas (MPA).</span></div><div class="wp-workCard_item wp-workCard--actions"><span class="work-strip-bookmark-button-container"></span><span class="wp-workCard--action visible-if-viewed-by-owner inline-block" style="display: none;"><span class="js-profile-work-strip-edit-button-wrapper profile-work-strip-edit-button-wrapper" data-work-id="122447360"><a class="js-profile-work-strip-edit-button" tabindex="0"><span><i class="fa fa-pencil"></i></span><span>Edit</span></a></span></span></div><div class="wp-workCard_item wp-workCard--stats"><span><span><span class="js-view-count view-count u-mr2x" data-work-id="122447360"><i class="fa fa-spinner fa-spin"></i></span><script>$(function () { var workId = 122447360; window.Academia.workViewCountsFetcher.queue(workId, function (count) { var description = window.$h.commaizeInt(count) + " " + window.$h.pluralize(count, 'View'); $(".js-view-count[data-work-id=122447360]").text(description); $(".js-view-count[data-work-id=122447360]").attr('title', description).tooltip(); }); });</script></span></span><span><span class="percentile-widget hidden"><span class="u-mr2x work-percentile"></span></span><script>$(function () { var workId = 122447360; window.Academia.workPercentilesFetcher.queue(workId, function (percentileText) { var container = $(".js-work-strip[data-work-id='122447360']"); container.find('.work-percentile').text(percentileText.charAt(0).toUpperCase() + percentileText.slice(1)); container.find('.percentile-widget').show(); container.find('.percentile-widget').removeClass('hidden'); }); });</script></span></div><div id="work-strip-premium-row-container"></div></div></div><script> require.config({ waitSeconds: 90 })(["https://a.academia-assets.com/assets/wow_profile-a9bf3a2bc8c89fa2a77156577594264ee8a0f214d74241bc0fcd3f69f8d107ac.js","https://a.academia-assets.com/assets/work_edit-ad038b8c047c1a8d4fa01b402d530ff93c45fee2137a149a4a5398bc8ad67560.js"], function() { // from javascript_helper.rb var dispatcherData = {} if (false){ window.WowProfile.dispatcher = window.WowProfile.dispatcher || _.clone(Backbone.Events); 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$(this).data('initialized', true); } }); $a.trackClickSource(".js-work-strip-work-link", "profile_work_strip") if (false) { Aedu.setUpFigureCarousel('profile-work-122447360-figures'); } }); </script> <div class="js-work-strip profile--work_container" data-work-id="122447359"><div class="profile--work_thumbnail hidden-xs"><a class="js-work-strip-work-link" data-click-track="profile-work-strip-thumbnail" href="https://www.academia.edu/122447359/Experimental_investigation_of_the_hydrodynamic_performance_of_the_ISWEC_1_20_scaled_device"><img alt="Research paper thumbnail of Experimental investigation of the hydrodynamic performance of the ISWEC 1:20 scaled device" class="work-thumbnail" src="https://attachments.academia-assets.com/117108879/thumbnails/1.jpg" /></a></div><div class="wp-workCard wp-workCard_itemContainer"><div class="wp-workCard_item wp-workCard--title"><a class="js-work-strip-work-link text-gray-darker" data-click-track="profile-work-strip-title" href="https://www.academia.edu/122447359/Experimental_investigation_of_the_hydrodynamic_performance_of_the_ISWEC_1_20_scaled_device">Experimental investigation of the hydrodynamic performance of the ISWEC 1:20 scaled device</a></div><div class="wp-workCard_item"><span class="js-work-more-abstract-truncated">An experimental campaign test has performed on the 1:20 scaled moored model of ISWEC (Inertial Se...</span><a class="js-work-more-abstract" data-broccoli-component="work_strip.more_abstract" data-click-track="profile-work-strip-more-abstract" href="javascript:;"><span> more </span><span><i class="fa fa-caret-down"></i></span></a><span class="js-work-more-abstract-untruncated hidden">An experimental campaign test has performed on the 1:20 scaled moored model of ISWEC (Inertial Sea Wave Energy Converter). The annual productivity of the device is strictly correlated to the hydrodynamic properties of the floater. Therefore, is fundamental to carry out an experimental investigation of the hydrodynamic performance of the floater and compare the results with the numerical codes. In this paper the experimental campaign is described. Two different mooring configurations were tested to understand the different influence of mooring forces on the floater dynamics. The non-dimensional Response Amplitude Operator (RAO) is representative of the hydrodynamic performances of the floater. Therefore, the device with both the mooring configurations has been tested in regular waves of constant wave steepness 1/50. Conclusions are commenting the differences a between numerical and experimental results and the impact of nonlinearities on hydrodynamic performances.</span></div><div class="wp-workCard_item wp-workCard--actions"><span class="work-strip-bookmark-button-container"></span><a id="b9bf13d91005181e461bb6e481081f1d" class="wp-workCard--action" rel="nofollow" data-click-track="profile-work-strip-download" data-download="{"attachment_id":117108879,"asset_id":122447359,"asset_type":"Work","button_location":"profile"}" href="https://www.academia.edu/attachments/117108879/download_file?s=profile"><span><i class="fa fa-arrow-down"></i></span><span>Download</span></a><span class="wp-workCard--action visible-if-viewed-by-owner inline-block" style="display: none;"><span class="js-profile-work-strip-edit-button-wrapper profile-work-strip-edit-button-wrapper" data-work-id="122447359"><a class="js-profile-work-strip-edit-button" tabindex="0"><span><i class="fa fa-pencil"></i></span><span>Edit</span></a></span></span></div><div class="wp-workCard_item wp-workCard--stats"><span><span><span class="js-view-count view-count u-mr2x" data-work-id="122447359"><i class="fa fa-spinner fa-spin"></i></span><script>$(function () { var workId = 122447359; window.Academia.workViewCountsFetcher.queue(workId, function (count) { var description = window.$h.commaizeInt(count) + " " + window.$h.pluralize(count, 'View'); $(".js-view-count[data-work-id=122447359]").text(description); $(".js-view-count[data-work-id=122447359]").attr('title', description).tooltip(); }); });</script></span></span><span><span class="percentile-widget hidden"><span class="u-mr2x work-percentile"></span></span><script>$(function () { var workId = 122447359; window.Academia.workPercentilesFetcher.queue(workId, function (percentileText) { var container = $(".js-work-strip[data-work-id='122447359']"); container.find('.work-percentile').text(percentileText.charAt(0).toUpperCase() + percentileText.slice(1)); container.find('.percentile-widget').show(); container.find('.percentile-widget').removeClass('hidden'); }); });</script></span></div><div id="work-strip-premium-row-container"></div></div></div><script> require.config({ waitSeconds: 90 })(["https://a.academia-assets.com/assets/wow_profile-a9bf3a2bc8c89fa2a77156577594264ee8a0f214d74241bc0fcd3f69f8d107ac.js","https://a.academia-assets.com/assets/work_edit-ad038b8c047c1a8d4fa01b402d530ff93c45fee2137a149a4a5398bc8ad67560.js"], function() { // from javascript_helper.rb var dispatcherData = {} if (true){ window.WowProfile.dispatcher = window.WowProfile.dispatcher || _.clone(Backbone.Events); dispatcherData = { dispatcher: window.WowProfile.dispatcher, downloadLinkId: "b9bf13d91005181e461bb6e481081f1d" } } $('.js-work-strip[data-work-id=122447359]').each(function() { if (!$(this).data('initialized')) { new WowProfile.WorkStripView({ el: this, workJSON: {"id":122447359,"title":"Experimental investigation of the hydrodynamic performance of the ISWEC 1:20 scaled device","translated_title":"","metadata":{"grobid_abstract":"An experimental campaign test has performed on the 1:20 scaled moored model of ISWEC (Inertial Sea Wave Energy Converter). 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The annual productivity of the device is strictly correlated to the hydrodynamic properties of the floater. Therefore, is fundamental to carry out an experimental investigation of the hydrodynamic performance of the floater and compare the results with the numerical codes. In this paper the experimental campaign is described. Two different mooring configurations were tested to understand the different influence of mooring forces on the floater dynamics. The non-dimensional Response Amplitude Operator (RAO) is representative of the hydrodynamic performances of the floater. Therefore, the device with both the mooring configurations has been tested in regular waves of constant wave steepness 1/50. 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Recently, the new ISO 12215-5:2019 made notable changes to the way high-speed crafts are analysed, including extending the acceleration experienced up to 8 g in certain circumstances. Nevertheless, despite the multiple iterations and variety of regulatory bodies, the seminal work undertaken on planing crafts throughout the 1960s and 1970s remains the foundation of any rule-based design requirement. Consequently, this paper investigates an array of recently published rules though a comparative design case study, the current state-of-the-art across a number of regulations, and the ultimate impact on scantlings. The study reveals that, despite divergence in intermediate calculations and assumptions, similar requirements are ultimately achieved. Eventually, discussion on the comparison undertaken and future trends in high-speed marine vehicles is provided, tackling the relevance of classical planing theory in light of contemporary innovations.</span></div><div class="wp-workCard_item wp-workCard--actions"><span class="work-strip-bookmark-button-container"></span><span class="wp-workCard--action visible-if-viewed-by-owner inline-block" style="display: none;"><span class="js-profile-work-strip-edit-button-wrapper profile-work-strip-edit-button-wrapper" data-work-id="122447352"><a class="js-profile-work-strip-edit-button" tabindex="0"><span><i class="fa fa-pencil"></i></span><span>Edit</span></a></span></span></div><div class="wp-workCard_item wp-workCard--stats"><span><span><span class="js-view-count view-count u-mr2x" data-work-id="122447352"><i class="fa fa-spinner fa-spin"></i></span><script>$(function () { var workId = 122447352; window.Academia.workViewCountsFetcher.queue(workId, function (count) { var description = window.$h.commaizeInt(count) + " " + window.$h.pluralize(count, 'View'); $(".js-view-count[data-work-id=122447352]").text(description); $(".js-view-count[data-work-id=122447352]").attr('title', description).tooltip(); }); });</script></span></span><span><span class="percentile-widget hidden"><span class="u-mr2x work-percentile"></span></span><script>$(function () { var workId = 122447352; window.Academia.workPercentilesFetcher.queue(workId, function (percentileText) { var container = $(".js-work-strip[data-work-id='122447352']"); container.find('.work-percentile').text(percentileText.charAt(0).toUpperCase() + percentileText.slice(1)); container.find('.percentile-widget').show(); container.find('.percentile-widget').removeClass('hidden'); }); });</script></span></div><div id="work-strip-premium-row-container"></div></div></div><script> require.config({ waitSeconds: 90 })(["https://a.academia-assets.com/assets/wow_profile-a9bf3a2bc8c89fa2a77156577594264ee8a0f214d74241bc0fcd3f69f8d107ac.js","https://a.academia-assets.com/assets/work_edit-ad038b8c047c1a8d4fa01b402d530ff93c45fee2137a149a4a5398bc8ad67560.js"], function() { // from javascript_helper.rb var dispatcherData = {} if (false){ window.WowProfile.dispatcher = window.WowProfile.dispatcher || _.clone(Backbone.Events); dispatcherData = { dispatcher: window.WowProfile.dispatcher, downloadLinkId: "-1" } } $('.js-work-strip[data-work-id=122447352]').each(function() { if (!$(this).data('initialized')) { new WowProfile.WorkStripView({ el: this, workJSON: {"id":122447352,"title":"Comparative Assessment of Rule-Based Design on the Pressures and Resulting Scantlings of High Speed Powercrafts","translated_title":"","metadata":{"abstract":"The rules and regulations inherent to the design pressures and scantlings of high-speed powercrafts are numerous, and regularly reviewed. 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Eventually, discussion on the comparison undertaken and future trends in high-speed marine vehicles is provided, tackling the relevance of classical planing theory in light of contemporary innovations.","internal_url":"https://www.academia.edu/122447352/Comparative_Assessment_of_Rule_Based_Design_on_the_Pressures_and_Resulting_Scantlings_of_High_Speed_Powercrafts","translated_internal_url":"","created_at":"2024-07-30T00:17:21.912-07:00","preview_url":null,"current_user_can_edit":null,"current_user_is_owner":null,"owner_id":3539088,"coauthors_can_edit":true,"document_type":"paper","co_author_tags":[],"downloadable_attachments":[],"slug":"Comparative_Assessment_of_Rule_Based_Design_on_the_Pressures_and_Resulting_Scantlings_of_High_Speed_Powercrafts","translated_slug":"","page_count":null,"language":"en","content_type":"Work","summary":"The rules and regulations inherent to the design pressures and scantlings of high-speed powercrafts are numerous, and regularly reviewed. Recently, the new ISO 12215-5:2019 made notable changes to the way high-speed crafts are analysed, including extending the acceleration experienced up to 8 g in certain circumstances. Nevertheless, despite the multiple iterations and variety of regulatory bodies, the seminal work undertaken on planing crafts throughout the 1960s and 1970s remains the foundation of any rule-based design requirement. Consequently, this paper investigates an array of recently published rules though a comparative design case study, the current state-of-the-art across a number of regulations, and the ultimate impact on scantlings. The study reveals that, despite divergence in intermediate calculations and assumptions, similar requirements are ultimately achieved. Eventually, discussion on the comparison undertaken and future trends in high-speed marine vehicles is provided, tackling the relevance of classical planing theory in light of contemporary innovations.","owner":{"id":3539088,"first_name":"Ermina","middle_initials":null,"last_name":"Begovic","page_name":"ErminaBegovic","domain_name":"unina","created_at":"2013-03-21T19:49:11.700-07:00","display_name":"Ermina Begovic","url":"https://unina.academia.edu/ErminaBegovic"},"attachments":[],"research_interests":[{"id":422,"name":"Computer Science","url":"https://www.academia.edu/Documents/in/Computer_Science"},{"id":152666,"name":"iOS","url":"https://www.academia.edu/Documents/in/iOS"}],"urls":[{"id":43739857,"url":"https://doi.org/10.3233/pmst200052"}]}, dispatcherData: dispatcherData }); $(this).data('initialized', true); } }); $a.trackClickSource(".js-work-strip-work-link", "profile_work_strip") if (false) { Aedu.setUpFigureCarousel('profile-work-122447352-figures'); } }); </script> <div class="js-work-strip profile--work_container" data-work-id="122447349"><div class="profile--work_thumbnail hidden-xs"><a class="js-work-strip-work-link" data-click-track="profile-work-strip-thumbnail" rel="nofollow" href="https://www.academia.edu/122447349/On_board_monitoring_and_estimation_of_lateral_accelerations_through_extreme_value_theory"><img alt="Research paper thumbnail of On-board monitoring and estimation of lateral accelerations through extreme value theory" class="work-thumbnail" src="https://a.academia-assets.com/images/blank-paper.jpg" /></a></div><div class="wp-workCard wp-workCard_itemContainer"><div class="wp-workCard_item wp-workCard--title">On-board monitoring and estimation of lateral accelerations through extreme value theory</div><div class="wp-workCard_item"><span>Ocean Engineering</span><span>, Sep 1, 2023</span></div><div class="wp-workCard_item wp-workCard--actions"><span class="work-strip-bookmark-button-container"></span><span class="wp-workCard--action visible-if-viewed-by-owner inline-block" style="display: none;"><span class="js-profile-work-strip-edit-button-wrapper profile-work-strip-edit-button-wrapper" data-work-id="122447349"><a class="js-profile-work-strip-edit-button" tabindex="0"><span><i class="fa fa-pencil"></i></span><span>Edit</span></a></span></span></div><div class="wp-workCard_item wp-workCard--stats"><span><span><span class="js-view-count view-count u-mr2x" data-work-id="122447349"><i class="fa fa-spinner fa-spin"></i></span><script>$(function () { var workId = 122447349; window.Academia.workViewCountsFetcher.queue(workId, function (count) { var description = window.$h.commaizeInt(count) + " " + window.$h.pluralize(count, 'View'); $(".js-view-count[data-work-id=122447349]").text(description); $(".js-view-count[data-work-id=122447349]").attr('title', description).tooltip(); }); });</script></span></span><span><span class="percentile-widget hidden"><span class="u-mr2x work-percentile"></span></span><script>$(function () { var workId = 122447349; window.Academia.workPercentilesFetcher.queue(workId, function (percentileText) { var container = $(".js-work-strip[data-work-id='122447349']"); container.find('.work-percentile').text(percentileText.charAt(0).toUpperCase() + percentileText.slice(1)); container.find('.percentile-widget').show(); container.find('.percentile-widget').removeClass('hidden'); }); });</script></span></div><div id="work-strip-premium-row-container"></div></div></div><script> require.config({ waitSeconds: 90 })(["https://a.academia-assets.com/assets/wow_profile-a9bf3a2bc8c89fa2a77156577594264ee8a0f214d74241bc0fcd3f69f8d107ac.js","https://a.academia-assets.com/assets/work_edit-ad038b8c047c1a8d4fa01b402d530ff93c45fee2137a149a4a5398bc8ad67560.js"], function() { // from javascript_helper.rb var dispatcherData = {} if (false){ window.WowProfile.dispatcher = window.WowProfile.dispatcher || _.clone(Backbone.Events); 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$(this).data('initialized', true); } }); $a.trackClickSource(".js-work-strip-work-link", "profile_work_strip") if (false) { Aedu.setUpFigureCarousel('profile-work-122447349-figures'); } }); </script> <div class="js-work-strip profile--work_container" data-work-id="122447346"><div class="profile--work_thumbnail hidden-xs"><a class="js-work-strip-work-link" data-click-track="profile-work-strip-thumbnail" rel="nofollow" href="https://www.academia.edu/122447346/Excessive_acceleration_simplified_Operational_Guidance"><img alt="Research paper thumbnail of Excessive acceleration simplified Operational Guidance" class="work-thumbnail" src="https://a.academia-assets.com/images/blank-paper.jpg" /></a></div><div class="wp-workCard wp-workCard_itemContainer"><div class="wp-workCard_item wp-workCard--title">Excessive acceleration simplified Operational Guidance</div><div class="wp-workCard_item"><span>International Journal of Naval Architecture and Ocean Engineering</span><span>, 2022</span></div><div class="wp-workCard_item wp-workCard--actions"><span class="work-strip-bookmark-button-container"></span><span class="wp-workCard--action visible-if-viewed-by-owner inline-block" style="display: none;"><span class="js-profile-work-strip-edit-button-wrapper profile-work-strip-edit-button-wrapper" data-work-id="122447346"><a class="js-profile-work-strip-edit-button" tabindex="0"><span><i class="fa fa-pencil"></i></span><span>Edit</span></a></span></span></div><div class="wp-workCard_item wp-workCard--stats"><span><span><span class="js-view-count view-count u-mr2x" data-work-id="122447346"><i class="fa fa-spinner fa-spin"></i></span><script>$(function () { var workId = 122447346; window.Academia.workViewCountsFetcher.queue(workId, function (count) { var description = window.$h.commaizeInt(count) + " " + window.$h.pluralize(count, 'View'); $(".js-view-count[data-work-id=122447346]").text(description); $(".js-view-count[data-work-id=122447346]").attr('title', description).tooltip(); }); });</script></span></span><span><span class="percentile-widget hidden"><span class="u-mr2x work-percentile"></span></span><script>$(function () { var workId = 122447346; window.Academia.workPercentilesFetcher.queue(workId, function (percentileText) { var container = $(".js-work-strip[data-work-id='122447346']"); container.find('.work-percentile').text(percentileText.charAt(0).toUpperCase() + percentileText.slice(1)); container.find('.percentile-widget').show(); container.find('.percentile-widget').removeClass('hidden'); }); });</script></span></div><div id="work-strip-premium-row-container"></div></div></div><script> require.config({ waitSeconds: 90 })(["https://a.academia-assets.com/assets/wow_profile-a9bf3a2bc8c89fa2a77156577594264ee8a0f214d74241bc0fcd3f69f8d107ac.js","https://a.academia-assets.com/assets/work_edit-ad038b8c047c1a8d4fa01b402d530ff93c45fee2137a149a4a5398bc8ad67560.js"], function() { // from javascript_helper.rb var dispatcherData = {} if (false){ window.WowProfile.dispatcher = window.WowProfile.dispatcher || _.clone(Backbone.Events); 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$(this).data('initialized', true); } }); $a.trackClickSource(".js-work-strip-work-link", "profile_work_strip") if (false) { Aedu.setUpFigureCarousel('profile-work-122447346-figures'); } }); </script> <div class="js-work-strip profile--work_container" data-work-id="122447344"><div class="profile--work_thumbnail hidden-xs"><a class="js-work-strip-work-link" data-click-track="profile-work-strip-thumbnail" href="https://www.academia.edu/122447344/Sailing_dinghy_hydrodynamic_resistance_by_experimental_and_numerical_assessments"><img alt="Research paper thumbnail of Sailing dinghy hydrodynamic resistance by experimental and numerical assessments" class="work-thumbnail" src="https://attachments.academia-assets.com/117108884/thumbnails/1.jpg" /></a></div><div class="wp-workCard wp-workCard_itemContainer"><div class="wp-workCard_item wp-workCard--title"><a class="js-work-strip-work-link text-gray-darker" data-click-track="profile-work-strip-title" href="https://www.academia.edu/122447344/Sailing_dinghy_hydrodynamic_resistance_by_experimental_and_numerical_assessments">Sailing dinghy hydrodynamic resistance by experimental and numerical assessments</a></div><div class="wp-workCard_item"><span>Ocean Engineering</span><span>, Oct 1, 2020</span></div><div class="wp-workCard_item"><span class="js-work-more-abstract-truncated">The International Space Station (ISS) Oxygen Generator Assembly (OGA) operational performance may...</span><a class="js-work-more-abstract" data-broccoli-component="work_strip.more_abstract" data-click-track="profile-work-strip-more-abstract" href="javascript:;"><span> more </span><span><i class="fa fa-caret-down"></i></span></a><span class="js-work-more-abstract-untruncated hidden">The International Space Station (ISS) Oxygen Generator Assembly (OGA) operational performance may be adversely impacted by microbiological growth and biofilm formation over the electrolysis cell membranes. Biofilms could hinder the transport of water from the bulk fluid stream to the membranes and increase the cell resistance resulting in higher cell voltages and a shorter cell life. A microbial challenge test was performed on duplicate single liquid cathode feed electrolyzer cells to evaluate operational performance with increasing levels of a mixture of five bacteria isolated from ISS and Space Shuttle potable water systems. Baseline performance of the single water electrolysis cells was determined for approximately one month with deionized water. Monthly performance was also determined following each inoculation of the feed tank with 100, 1000, 10,000 and 100,000 cells/ml of the mixed suspension of test bacteria. Water samples from the feed tank and recirculating water loops for each cell were periodically analyzed for enumeration and speciation of bacteria and total organic carbon. While initially a concern, this test program has demonstrated that the performance of the electrolysis cell is not adversely impacted by feed water containing the five species of bacteria tested at a concentration measured as high as 1,000,000 colony forming units (CFU)/ml. This paper presents the methodologies used in the conduct of this test program along with the performance test results at each level of bacteria concentration.</span></div><div class="wp-workCard_item wp-workCard--actions"><span class="work-strip-bookmark-button-container"></span><a id="e3f26a98a589ff3138776250d4e79dcc" class="wp-workCard--action" rel="nofollow" data-click-track="profile-work-strip-download" data-download="{"attachment_id":117108884,"asset_id":122447344,"asset_type":"Work","button_location":"profile"}" href="https://www.academia.edu/attachments/117108884/download_file?s=profile"><span><i class="fa fa-arrow-down"></i></span><span>Download</span></a><span class="wp-workCard--action visible-if-viewed-by-owner inline-block" style="display: none;"><span class="js-profile-work-strip-edit-button-wrapper profile-work-strip-edit-button-wrapper" data-work-id="122447344"><a class="js-profile-work-strip-edit-button" tabindex="0"><span><i class="fa fa-pencil"></i></span><span>Edit</span></a></span></span></div><div class="wp-workCard_item wp-workCard--stats"><span><span><span class="js-view-count view-count u-mr2x" data-work-id="122447344"><i class="fa fa-spinner fa-spin"></i></span><script>$(function () { var workId = 122447344; window.Academia.workViewCountsFetcher.queue(workId, function (count) { var description = window.$h.commaizeInt(count) + " " + window.$h.pluralize(count, 'View'); $(".js-view-count[data-work-id=122447344]").text(description); $(".js-view-count[data-work-id=122447344]").attr('title', description).tooltip(); }); });</script></span></span><span><span class="percentile-widget hidden"><span class="u-mr2x work-percentile"></span></span><script>$(function () { var workId = 122447344; window.Academia.workPercentilesFetcher.queue(workId, function (percentileText) { var container = $(".js-work-strip[data-work-id='122447344']"); container.find('.work-percentile').text(percentileText.charAt(0).toUpperCase() + percentileText.slice(1)); container.find('.percentile-widget').show(); container.find('.percentile-widget').removeClass('hidden'); }); });</script></span></div><div id="work-strip-premium-row-container"></div></div></div><script> require.config({ waitSeconds: 90 })(["https://a.academia-assets.com/assets/wow_profile-a9bf3a2bc8c89fa2a77156577594264ee8a0f214d74241bc0fcd3f69f8d107ac.js","https://a.academia-assets.com/assets/work_edit-ad038b8c047c1a8d4fa01b402d530ff93c45fee2137a149a4a5398bc8ad67560.js"], function() { // from javascript_helper.rb var dispatcherData = {} if (true){ window.WowProfile.dispatcher = window.WowProfile.dispatcher || _.clone(Backbone.Events); dispatcherData = { dispatcher: window.WowProfile.dispatcher, downloadLinkId: "e3f26a98a589ff3138776250d4e79dcc" } } $('.js-work-strip[data-work-id=122447344]').each(function() { if (!$(this).data('initialized')) { new WowProfile.WorkStripView({ el: this, workJSON: {"id":122447344,"title":"Sailing dinghy hydrodynamic resistance by experimental and numerical assessments","translated_title":"","metadata":{"publisher":"Elsevier BV","grobid_abstract":"The International Space Station (ISS) Oxygen Generator Assembly (OGA) operational performance may be adversely impacted by microbiological growth and biofilm formation over the electrolysis cell membranes. Biofilms could hinder the transport of water from the bulk fluid stream to the membranes and increase the cell resistance resulting in higher cell voltages and a shorter cell life. A microbial challenge test was performed on duplicate single liquid cathode feed electrolyzer cells to evaluate operational performance with increasing levels of a mixture of five bacteria isolated from ISS and Space Shuttle potable water systems. Baseline performance of the single water electrolysis cells was determined for approximately one month with deionized water. Monthly performance was also determined following each inoculation of the feed tank with 100, 1000, 10,000 and 100,000 cells/ml of the mixed suspension of test bacteria. Water samples from the feed tank and recirculating water loops for each cell were periodically analyzed for enumeration and speciation of bacteria and total organic carbon. While initially a concern, this test program has demonstrated that the performance of the electrolysis cell is not adversely impacted by feed water containing the five species of bacteria tested at a concentration measured as high as 1,000,000 colony forming units (CFU)/ml. This paper presents the methodologies used in the conduct of this test program along with the performance test results at each level of bacteria concentration.","publication_date":{"day":1,"month":10,"year":2020,"errors":{}},"publication_name":"Ocean Engineering","grobid_abstract_attachment_id":117108884},"translated_abstract":null,"internal_url":"https://www.academia.edu/122447344/Sailing_dinghy_hydrodynamic_resistance_by_experimental_and_numerical_assessments","translated_internal_url":"","created_at":"2024-07-30T00:17:21.117-07:00","preview_url":null,"current_user_can_edit":null,"current_user_is_owner":null,"owner_id":3539088,"coauthors_can_edit":true,"document_type":"paper","co_author_tags":[],"downloadable_attachments":[{"id":117108884,"title":"","file_type":"pdf","scribd_thumbnail_url":"https://attachments.academia-assets.com/117108884/thumbnails/1.jpg","file_name":"PII_S0029801818319644.pdf","download_url":"https://www.academia.edu/attachments/117108884/download_file","bulk_download_file_name":"Sailing_dinghy_hydrodynamic_resistance_b.pdf","bulk_download_url":"https://d1wqtxts1xzle7.cloudfront.net/117108884/PII_S0029801818319644-libre.pdf?1722327185=\u0026response-content-disposition=attachment%3B+filename%3DSailing_dinghy_hydrodynamic_resistance_b.pdf\u0026Expires=1743461259\u0026Signature=Q7dDCJ~fEmnI1BvcfHiZtKetT3P-15sBsxZFfZ1nx-wFPkqTMji3LEY1aKuuDxt2ZSaxFudpy~2ktxojadE2ZwshhgDkC4eLlPCx-jhL2RYuSfMW2pcISadyIMDeswYlcHUNlrcgH4XROw7ayuGaxOtW80Mv~u8tEhIfNMPa1zWuLEk-KZp6bF7LTO8nykyMFTCYdswHdSeNSoNpkDyBbb8Qkloztf0maQfmqVAmpIdEpWqY1EnUpEaEEf15iFCCO57NFWgEFXrLjicAAQ~InNlKNfBKbu3-cjkd4-wTkViEOnJ8xaTcw-GCS7zWNqfv6OYw2Bdd7jIXrRaM43MNnA__\u0026Key-Pair-Id=APKAJLOHF5GGSLRBV4ZA"}],"slug":"Sailing_dinghy_hydrodynamic_resistance_by_experimental_and_numerical_assessments","translated_slug":"","page_count":1,"language":"en","content_type":"Work","summary":"The International Space Station (ISS) Oxygen Generator Assembly (OGA) operational performance may be adversely impacted by microbiological growth and biofilm formation over the electrolysis cell membranes. Biofilms could hinder the transport of water from the bulk fluid stream to the membranes and increase the cell resistance resulting in higher cell voltages and a shorter cell life. A microbial challenge test was performed on duplicate single liquid cathode feed electrolyzer cells to evaluate operational performance with increasing levels of a mixture of five bacteria isolated from ISS and Space Shuttle potable water systems. Baseline performance of the single water electrolysis cells was determined for approximately one month with deionized water. Monthly performance was also determined following each inoculation of the feed tank with 100, 1000, 10,000 and 100,000 cells/ml of the mixed suspension of test bacteria. Water samples from the feed tank and recirculating water loops for each cell were periodically analyzed for enumeration and speciation of bacteria and total organic carbon. While initially a concern, this test program has demonstrated that the performance of the electrolysis cell is not adversely impacted by feed water containing the five species of bacteria tested at a concentration measured as high as 1,000,000 colony forming units (CFU)/ml. This paper presents the methodologies used in the conduct of this test program along with the performance test results at each level of bacteria concentration.","owner":{"id":3539088,"first_name":"Ermina","middle_initials":null,"last_name":"Begovic","page_name":"ErminaBegovic","domain_name":"unina","created_at":"2013-03-21T19:49:11.700-07:00","display_name":"Ermina Begovic","url":"https://unina.academia.edu/ErminaBegovic"},"attachments":[{"id":117108884,"title":"","file_type":"pdf","scribd_thumbnail_url":"https://attachments.academia-assets.com/117108884/thumbnails/1.jpg","file_name":"PII_S0029801818319644.pdf","download_url":"https://www.academia.edu/attachments/117108884/download_file","bulk_download_file_name":"Sailing_dinghy_hydrodynamic_resistance_b.pdf","bulk_download_url":"https://d1wqtxts1xzle7.cloudfront.net/117108884/PII_S0029801818319644-libre.pdf?1722327185=\u0026response-content-disposition=attachment%3B+filename%3DSailing_dinghy_hydrodynamic_resistance_b.pdf\u0026Expires=1743461260\u0026Signature=hIkPvJlHN4UAgkaiooIMtHjURZuUh9rXxN5sEr9MnWYElRQjVv-2nM7k~X7k~5X9ZC9XcdG~hh6G2YH6pUuoLLXvciz-luLbTsumMRkbVZ~tNeeltCsa-nXdBdXyUJZoJBFFd-xoeJsYijc-9HKE8S7f1G-9U7bldqVJDNP6BeHXe~75nwFqW6XwAR0zIDwtwMqIk9qnTpqG4hdz0t3cz~5K71a27UWblrwgdBQycc743QmKlPqvF0iO5N~K1LIpG~Vgw2t3yzFTvH3Rwm6fGI9a3wmYb6lbewr0-w0GAVvJCbrNYchs8FL7orVAxuWf3lngfC5TyqN1nt5balFq8Q__\u0026Key-Pair-Id=APKAJLOHF5GGSLRBV4ZA"}],"research_interests":[{"id":48,"name":"Engineering","url":"https://www.academia.edu/Documents/in/Engineering"},{"id":73,"name":"Civil Engineering","url":"https://www.academia.edu/Documents/in/Civil_Engineering"},{"id":81,"name":"Ocean Engineering","url":"https://www.academia.edu/Documents/in/Ocean_Engineering"},{"id":15532,"name":"Marine Engineering","url":"https://www.academia.edu/Documents/in/Marine_Engineering"},{"id":403398,"name":"Hull","url":"https://www.academia.edu/Documents/in/Hull"},{"id":471104,"name":"Maritime Engineering","url":"https://www.academia.edu/Documents/in/Maritime_Engineering"}],"urls":[{"id":43739852,"url":"https://doi.org/10.1016/j.oceaneng.2020.107458"}]}, dispatcherData: dispatcherData }); $(this).data('initialized', true); } }); $a.trackClickSource(".js-work-strip-work-link", "profile_work_strip") if (false) { Aedu.setUpFigureCarousel('profile-work-122447344-figures'); } }); </script> <div class="js-work-strip profile--work_container" data-work-id="122447342"><div class="profile--work_thumbnail hidden-xs"><a class="js-work-strip-work-link" data-click-track="profile-work-strip-thumbnail" href="https://www.academia.edu/122447342/CFD_simulations_for_surf_riding_occurrence_assessment"><img alt="Research paper thumbnail of CFD simulations for surf-riding occurrence assessment" class="work-thumbnail" src="https://attachments.academia-assets.com/117108876/thumbnails/1.jpg" /></a></div><div class="wp-workCard wp-workCard_itemContainer"><div class="wp-workCard_item wp-workCard--title"><a class="js-work-strip-work-link text-gray-darker" data-click-track="profile-work-strip-title" href="https://www.academia.edu/122447342/CFD_simulations_for_surf_riding_occurrence_assessment">CFD simulations for surf-riding occurrence assessment</a></div><div class="wp-workCard_item"><span>Ocean Engineering</span><span>, Dec 1, 2020</span></div><div class="wp-workCard_item"><span class="js-work-more-abstract-truncated">Surf-riding phenomenon occurs when a ship sailing in following waves is accelerated to wave celer...</span><a class="js-work-more-abstract" data-broccoli-component="work_strip.more_abstract" data-click-track="profile-work-strip-more-abstract" href="javascript:;"><span> more </span><span><i class="fa fa-caret-down"></i></span></a><span class="js-work-more-abstract-untruncated hidden">Surf-riding phenomenon occurs when a ship sailing in following waves is accelerated to wave celerity. In this paper, surf-riding occurrence is studied for the parent hull of the Systematic Series D by 3 degrees of freedom (DOF) CFD simulations. Simulation cases are chosen following IMO recommendations for a wavelength to ship length range and following IMO criterion for ship speed cases. Initial conditions for simulations are obtained from 1-DOF surge motion equation solved by bifurcation analysis. The aim is to define surf-riding limits for ship operability with a less conservative approach, taking into account force changes in waves compared to the one used in the 1-DOF model, which considers calm water approximations. After defining surf-riding boundaries in terms of wave heights for different wavelengths and ship speeds, calculated forces are analysed to evaluate the magnitude and trend of non-linear effects due to wave elevation and ship-wave interaction. A detailed analysis is conducted on resistance, thrust, and wave forces in surging and surf-riding conditions, comparing the applied methodologies. The introduction of wave velocity field influence in the thrust force and the calculation of Froude-Krylov wave-force up to actual wave profile have been discussed and identified as possible improvements of 1-DOF approach.</span></div><div class="wp-workCard_item wp-workCard--actions"><span class="work-strip-bookmark-button-container"></span><a id="a4bbbac6d53612b9773f3e328414907a" class="wp-workCard--action" rel="nofollow" data-click-track="profile-work-strip-download" data-download="{"attachment_id":117108876,"asset_id":122447342,"asset_type":"Work","button_location":"profile"}" href="https://www.academia.edu/attachments/117108876/download_file?s=profile"><span><i class="fa fa-arrow-down"></i></span><span>Download</span></a><span class="wp-workCard--action visible-if-viewed-by-owner inline-block" style="display: none;"><span class="js-profile-work-strip-edit-button-wrapper profile-work-strip-edit-button-wrapper" data-work-id="122447342"><a class="js-profile-work-strip-edit-button" tabindex="0"><span><i class="fa fa-pencil"></i></span><span>Edit</span></a></span></span></div><div class="wp-workCard_item wp-workCard--stats"><span><span><span class="js-view-count view-count u-mr2x" data-work-id="122447342"><i class="fa fa-spinner fa-spin"></i></span><script>$(function () { var workId = 122447342; window.Academia.workViewCountsFetcher.queue(workId, function (count) { var description = window.$h.commaizeInt(count) + " " + window.$h.pluralize(count, 'View'); $(".js-view-count[data-work-id=122447342]").text(description); $(".js-view-count[data-work-id=122447342]").attr('title', description).tooltip(); }); });</script></span></span><span><span class="percentile-widget hidden"><span class="u-mr2x work-percentile"></span></span><script>$(function () { var workId = 122447342; window.Academia.workPercentilesFetcher.queue(workId, function (percentileText) { var container = $(".js-work-strip[data-work-id='122447342']"); container.find('.work-percentile').text(percentileText.charAt(0).toUpperCase() + percentileText.slice(1)); container.find('.percentile-widget').show(); container.find('.percentile-widget').removeClass('hidden'); }); });</script></span></div><div id="work-strip-premium-row-container"></div></div></div><script> require.config({ waitSeconds: 90 })(["https://a.academia-assets.com/assets/wow_profile-a9bf3a2bc8c89fa2a77156577594264ee8a0f214d74241bc0fcd3f69f8d107ac.js","https://a.academia-assets.com/assets/work_edit-ad038b8c047c1a8d4fa01b402d530ff93c45fee2137a149a4a5398bc8ad67560.js"], function() { // from javascript_helper.rb var dispatcherData = {} if (true){ window.WowProfile.dispatcher = window.WowProfile.dispatcher || _.clone(Backbone.Events); dispatcherData = { dispatcher: window.WowProfile.dispatcher, downloadLinkId: "a4bbbac6d53612b9773f3e328414907a" } } $('.js-work-strip[data-work-id=122447342]').each(function() { if (!$(this).data('initialized')) { new WowProfile.WorkStripView({ el: this, workJSON: {"id":122447342,"title":"CFD simulations for surf-riding occurrence assessment","translated_title":"","metadata":{"publisher":"Elsevier BV","ai_title_tag":"Assessing Surf-Riding Using CFD Simulations","grobid_abstract":"Surf-riding phenomenon occurs when a ship sailing in following waves is accelerated to wave celerity. 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A detailed analysis is conducted on resistance, thrust, and wave forces in surging and surf-riding conditions, comparing the applied methodologies. 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In this paper, surf-riding occurrence is studied for the parent hull of the Systematic Series D by 3 degrees of freedom (DOF) CFD simulations. Simulation cases are chosen following IMO recommendations for a wavelength to ship length range and following IMO criterion for ship speed cases. Initial conditions for simulations are obtained from 1-DOF surge motion equation solved by bifurcation analysis. The aim is to define surf-riding limits for ship operability with a less conservative approach, taking into account force changes in waves compared to the one used in the 1-DOF model, which considers calm water approximations. After defining surf-riding boundaries in terms of wave heights for different wavelengths and ship speeds, calculated forces are analysed to evaluate the magnitude and trend of non-linear effects due to wave elevation and ship-wave interaction. A detailed analysis is conducted on resistance, thrust, and wave forces in surging and surf-riding conditions, comparing the applied methodologies. The introduction of wave velocity field influence in the thrust force and the calculation of Froude-Krylov wave-force up to actual wave profile have been discussed and identified as possible improvements of 1-DOF approach.","owner":{"id":3539088,"first_name":"Ermina","middle_initials":null,"last_name":"Begovic","page_name":"ErminaBegovic","domain_name":"unina","created_at":"2013-03-21T19:49:11.700-07:00","display_name":"Ermina 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Science","url":"https://www.academia.edu/Documents/in/Computer_Science"},{"id":403398,"name":"Hull","url":"https://www.academia.edu/Documents/in/Hull"},{"id":1222385,"name":"service Business","url":"https://www.academia.edu/Documents/in/service_Business"}],"urls":[{"id":43739850,"url":"https://www.mdpi.com/2077-1312/11/3/495/pdf?version=1677486487"}]}, dispatcherData: dispatcherData }); $(this).data('initialized', true); } }); $a.trackClickSource(".js-work-strip-work-link", "profile_work_strip") if (false) { Aedu.setUpFigureCarousel('profile-work-122447340-figures'); } }); </script> <div class="js-work-strip profile--work_container" data-work-id="122447336"><div class="profile--work_thumbnail hidden-xs"><a class="js-work-strip-work-link" data-click-track="profile-work-strip-thumbnail" rel="nofollow" href="https://www.academia.edu/122447336/Low_resistance_hull_form_for_sustainable_pleasure_craft"><img alt="Research paper thumbnail of Low resistance hull form for sustainable pleasure craft" class="work-thumbnail" src="https://a.academia-assets.com/images/blank-paper.jpg" /></a></div><div class="wp-workCard wp-workCard_itemContainer"><div class="wp-workCard_item wp-workCard--title">Low resistance hull form for sustainable pleasure craft</div><div class="wp-workCard_item wp-workCard--actions"><span class="work-strip-bookmark-button-container"></span><span class="wp-workCard--action visible-if-viewed-by-owner inline-block" style="display: none;"><span class="js-profile-work-strip-edit-button-wrapper profile-work-strip-edit-button-wrapper" data-work-id="122447336"><a class="js-profile-work-strip-edit-button" tabindex="0"><span><i class="fa fa-pencil"></i></span><span>Edit</span></a></span></span></div><div class="wp-workCard_item wp-workCard--stats"><span><span><span class="js-view-count view-count u-mr2x" data-work-id="122447336"><i class="fa fa-spinner fa-spin"></i></span><script>$(function () { var workId = 122447336; 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})(["https://a.academia-assets.com/assets/wow_profile-a9bf3a2bc8c89fa2a77156577594264ee8a0f214d74241bc0fcd3f69f8d107ac.js","https://a.academia-assets.com/assets/work_edit-ad038b8c047c1a8d4fa01b402d530ff93c45fee2137a149a4a5398bc8ad67560.js"], function() { // from javascript_helper.rb var dispatcherData = {} if (false){ window.WowProfile.dispatcher = window.WowProfile.dispatcher || _.clone(Backbone.Events); dispatcherData = { dispatcher: window.WowProfile.dispatcher, downloadLinkId: "-1" } } $('.js-work-strip[data-work-id=122447336]').each(function() { if (!$(this).data('initialized')) { new WowProfile.WorkStripView({ el: this, workJSON: {"id":122447336,"title":"Low resistance hull form for sustainable pleasure 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href="https://www.academia.edu/122447331/Vulnerability_assessment_of_surf_riding_broaching_and_pure_loss_of_stability_for_Systematic_Series_D1_model"><img alt="Research paper thumbnail of Vulnerability assessment of surf-riding-broaching and pure loss of stability for Systematic Series D1 model" class="work-thumbnail" src="https://attachments.academia-assets.com/117108875/thumbnails/1.jpg" /></a></div><div class="wp-workCard wp-workCard_itemContainer"><div class="wp-workCard_item wp-workCard--title"><a class="js-work-strip-work-link text-gray-darker" data-click-track="profile-work-strip-title" href="https://www.academia.edu/122447331/Vulnerability_assessment_of_surf_riding_broaching_and_pure_loss_of_stability_for_Systematic_Series_D1_model">Vulnerability assessment of surf-riding-broaching and pure loss of stability for Systematic Series D1 model</a></div><div class="wp-workCard_item"><span>Ships and Offshore Structures</span><span>, Mar 27, 2019</span></div><div class="wp-workCard_item"><span class="js-work-more-abstract-truncated">This paper is focused on the first and second level vulnerability assessment of Surf riding/Broac...</span><a class="js-work-more-abstract" data-broccoli-component="work_strip.more_abstract" data-click-track="profile-work-strip-more-abstract" href="javascript:;"><span> more </span><span><i class="fa fa-caret-down"></i></span></a><span class="js-work-more-abstract-untruncated hidden">This paper is focused on the first and second level vulnerability assessment of Surf riding/Broaching and Pure Loss of Stability Criteria according to IMO second generation intact stability criteria. The calculations are performed for the semi-displacement twin-screw round-bilge hull form model D1 of the Systematic Series D. This model has hull form and service speed representative of corvettes built in 90-ties. The considered loading condition is obtained from Italian Navy ships statistics. Both criteria are analysed for different operational characteristics to evaluate the speed limits where the ship is not vulnerable. Model D1 is found to be vulnerable to both failure modes at service speed. Performing 2nd level of both criteria 'safe' speed is around 19 knots for surf-riding and around 15, 5 knots for pure loss. The obtained results are commented and compared against similar ships from the relevant state of the art papers.</span></div><div class="wp-workCard_item wp-workCard--actions"><span class="work-strip-bookmark-button-container"></span><a id="62cb5d811d8ca935d3ba7c274e75359b" class="wp-workCard--action" rel="nofollow" data-click-track="profile-work-strip-download" data-download="{"attachment_id":117108875,"asset_id":122447331,"asset_type":"Work","button_location":"profile"}" href="https://www.academia.edu/attachments/117108875/download_file?s=profile"><span><i class="fa fa-arrow-down"></i></span><span>Download</span></a><span class="wp-workCard--action visible-if-viewed-by-owner inline-block" style="display: none;"><span class="js-profile-work-strip-edit-button-wrapper profile-work-strip-edit-button-wrapper" data-work-id="122447331"><a class="js-profile-work-strip-edit-button" tabindex="0"><span><i class="fa fa-pencil"></i></span><span>Edit</span></a></span></span></div><div class="wp-workCard_item wp-workCard--stats"><span><span><span class="js-view-count view-count u-mr2x" data-work-id="122447331"><i class="fa fa-spinner fa-spin"></i></span><script>$(function () { var workId = 122447331; window.Academia.workViewCountsFetcher.queue(workId, function (count) { var description = window.$h.commaizeInt(count) + " " + window.$h.pluralize(count, 'View'); $(".js-view-count[data-work-id=122447331]").text(description); $(".js-view-count[data-work-id=122447331]").attr('title', description).tooltip(); }); });</script></span></span><span><span class="percentile-widget hidden"><span class="u-mr2x work-percentile"></span></span><script>$(function () { var workId = 122447331; window.Academia.workPercentilesFetcher.queue(workId, function (percentileText) { var container = $(".js-work-strip[data-work-id='122447331']"); container.find('.work-percentile').text(percentileText.charAt(0).toUpperCase() + percentileText.slice(1)); container.find('.percentile-widget').show(); container.find('.percentile-widget').removeClass('hidden'); }); });</script></span></div><div id="work-strip-premium-row-container"></div></div></div><script> require.config({ waitSeconds: 90 })(["https://a.academia-assets.com/assets/wow_profile-a9bf3a2bc8c89fa2a77156577594264ee8a0f214d74241bc0fcd3f69f8d107ac.js","https://a.academia-assets.com/assets/work_edit-ad038b8c047c1a8d4fa01b402d530ff93c45fee2137a149a4a5398bc8ad67560.js"], function() { // from javascript_helper.rb var dispatcherData = {} if (true){ window.WowProfile.dispatcher = window.WowProfile.dispatcher || _.clone(Backbone.Events); dispatcherData = { dispatcher: window.WowProfile.dispatcher, downloadLinkId: "62cb5d811d8ca935d3ba7c274e75359b" } } $('.js-work-strip[data-work-id=122447331]').each(function() { if (!$(this).data('initialized')) { new WowProfile.WorkStripView({ el: this, workJSON: {"id":122447331,"title":"Vulnerability assessment of surf-riding-broaching and pure loss of stability for Systematic Series D1 model","translated_title":"","metadata":{"publisher":"Taylor \u0026 Francis","grobid_abstract":"This paper is focused on the first and second level vulnerability assessment of Surf riding/Broaching and Pure Loss of Stability Criteria according to IMO second generation intact stability criteria. 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The obtained results are commented and compared against similar ships from the relevant state of the art papers.","owner":{"id":3539088,"first_name":"Ermina","middle_initials":null,"last_name":"Begovic","page_name":"ErminaBegovic","domain_name":"unina","created_at":"2013-03-21T19:49:11.700-07:00","display_name":"Ermina Begovic","url":"https://unina.academia.edu/ErminaBegovic"},"attachments":[{"id":117108875,"title":"","file_type":"pdf","scribd_thumbnail_url":"https://attachments.academia-assets.com/117108875/thumbnails/1.jpg","file_name":"17445302.2019.159654520240730-1-llguo0.pdf","download_url":"https://www.academia.edu/attachments/117108875/download_file","bulk_download_file_name":"Vulnerability_assessment_of_surf_riding.pdf","bulk_download_url":"https://d1wqtxts1xzle7.cloudfront.net/117108875/17445302.2019.159654520240730-1-llguo0-libre.pdf?1722327197=\u0026response-content-disposition=attachment%3B+filename%3DVulnerability_assessment_of_surf_riding.pdf\u0026Expires=1743461260\u0026Signature=a5u8Jd2Um3S6OLdxmDhXRcU~DLnZZhI1Wpf6SB5NX8~AUukD7sEMmhOIosuysAijVSVIY09oxnzkQ0Ak2Iocw3aAXt1AtNvG0my01CjeaHyjjdv-OWIBoTlgpDVxiGH6DTglsJ7jBKnxBsTTl2LbQ3WalMKceNw~DPm0kNd9F3~2DO-ti5V6GEvhUn9eK2hr5l2u3g-3sC-gbP5p16ARng8D0~HGG51fsXAm7~Bmm1LdUZYENzsIaaQaUyrLGT0DIheNC2KLMeLy-p4lyLTmcPuc6A2eA6f9AvQaeSvEbqw5fGbSO2QJTymklwjZGGsDddY247zEf~rT40IQJ8khZA__\u0026Key-Pair-Id=APKAJLOHF5GGSLRBV4ZA"}],"research_interests":[{"id":422,"name":"Computer Science","url":"https://www.academia.edu/Documents/in/Computer_Science"},{"id":299504,"name":"Ships and Offshore Structures","url":"https://www.academia.edu/Documents/in/Ships_and_Offshore_Structures"},{"id":403398,"name":"Hull","url":"https://www.academia.edu/Documents/in/Hull"},{"id":471104,"name":"Maritime Engineering","url":"https://www.academia.edu/Documents/in/Maritime_Engineering"}],"urls":[{"id":43739847,"url":"https://doi.org/10.1080/17445302.2019.1596545"}]}, dispatcherData: dispatcherData }); $(this).data('initialized', true); } }); $a.trackClickSource(".js-work-strip-work-link", "profile_work_strip") if (false) { Aedu.setUpFigureCarousel('profile-work-122447331-figures'); } }); </script> <div class="js-work-strip profile--work_container" data-work-id="122447327"><div class="profile--work_thumbnail hidden-xs"><a class="js-work-strip-work-link" data-click-track="profile-work-strip-thumbnail" href="https://www.academia.edu/122447327/A_Fast_Simulation_Method_for_Damaged_and_x0D_Ship_Dynamics_and_x0D"><img alt="Research paper thumbnail of A Fast Simulation Method for Damaged &#x0D; Ship Dynamics&#x0D" class="work-thumbnail" src="https://attachments.academia-assets.com/117108854/thumbnails/1.jpg" /></a></div><div class="wp-workCard wp-workCard_itemContainer"><div class="wp-workCard_item wp-workCard--title"><a class="js-work-strip-work-link text-gray-darker" data-click-track="profile-work-strip-title" href="https://www.academia.edu/122447327/A_Fast_Simulation_Method_for_Damaged_and_x0D_Ship_Dynamics_and_x0D">A Fast Simulation Method for Damaged &#x0D; Ship Dynamics&#x0D</a></div><div class="wp-workCard_item"><span>Journal of Marine Science and Engineering</span><span>, Apr 19, 2019</span></div><div class="wp-workCard_item"><span class="js-work-more-abstract-truncated">Ship accidents that entail flooding may lead to disastrous consequences which could be avoided or...</span><a class="js-work-more-abstract" data-broccoli-component="work_strip.more_abstract" data-click-track="profile-work-strip-more-abstract" href="javascript:;"><span> more </span><span><i class="fa fa-caret-down"></i></span></a><span class="js-work-more-abstract-untruncated hidden">Ship accidents that entail flooding may lead to disastrous consequences which could be avoided or mitigated based on the knowledge of damaged ship dynamics. The dynamic behaviour of a damaged hull is a complex phenomenon involving the interaction of the flooded water and the ship motions. The presence of a damage opening allows water flow into and out from the compartment, which further complicates the mathematical description of the problem. A fast simulation method, based on the lumped mass approach, is developed and presented. The lumped mass path in space depends on free-surface inclinations that differ from the ship angles of the roll and pitch. The viscous effects in the floodwater dynamics are implemented based on the model for the dissipation of the energy of standing waves in rectangular rooms. The method applies to both the transient stage of flooding and to the dynamic behaviour of a flooded ship in regular waves. In the first case, viscous effects are implemented considering the water in the compartment variable with time. Several case studies are carried out on three different hull models: Transient stage of flooding, roll decay of the damaged hull, and steady state responses in waves are simulated and compared with available experimental data.</span></div><div class="wp-workCard_item wp-workCard--actions"><span class="work-strip-bookmark-button-container"></span><a id="1b5ca35feb9d84046b81abf26ff3fa0d" class="wp-workCard--action" rel="nofollow" data-click-track="profile-work-strip-download" data-download="{"attachment_id":117108854,"asset_id":122447327,"asset_type":"Work","button_location":"profile"}" href="https://www.academia.edu/attachments/117108854/download_file?s=profile"><span><i class="fa fa-arrow-down"></i></span><span>Download</span></a><span class="wp-workCard--action visible-if-viewed-by-owner inline-block" style="display: none;"><span class="js-profile-work-strip-edit-button-wrapper profile-work-strip-edit-button-wrapper" data-work-id="122447327"><a class="js-profile-work-strip-edit-button" tabindex="0"><span><i class="fa fa-pencil"></i></span><span>Edit</span></a></span></span></div><div class="wp-workCard_item wp-workCard--stats"><span><span><span class="js-view-count view-count u-mr2x" data-work-id="122447327"><i class="fa fa-spinner fa-spin"></i></span><script>$(function () { var workId = 122447327; window.Academia.workViewCountsFetcher.queue(workId, function (count) { var description = window.$h.commaizeInt(count) + " " + window.$h.pluralize(count, 'View'); $(".js-view-count[data-work-id=122447327]").text(description); $(".js-view-count[data-work-id=122447327]").attr('title', description).tooltip(); }); });</script></span></span><span><span class="percentile-widget hidden"><span class="u-mr2x work-percentile"></span></span><script>$(function () { var workId = 122447327; window.Academia.workPercentilesFetcher.queue(workId, function (percentileText) { var container = $(".js-work-strip[data-work-id='122447327']"); container.find('.work-percentile').text(percentileText.charAt(0).toUpperCase() + percentileText.slice(1)); container.find('.percentile-widget').show(); container.find('.percentile-widget').removeClass('hidden'); }); });</script></span></div><div id="work-strip-premium-row-container"></div></div></div><script> require.config({ waitSeconds: 90 })(["https://a.academia-assets.com/assets/wow_profile-a9bf3a2bc8c89fa2a77156577594264ee8a0f214d74241bc0fcd3f69f8d107ac.js","https://a.academia-assets.com/assets/work_edit-ad038b8c047c1a8d4fa01b402d530ff93c45fee2137a149a4a5398bc8ad67560.js"], function() { // from javascript_helper.rb var dispatcherData = {} if (true){ window.WowProfile.dispatcher = window.WowProfile.dispatcher || _.clone(Backbone.Events); dispatcherData = { dispatcher: window.WowProfile.dispatcher, downloadLinkId: "1b5ca35feb9d84046b81abf26ff3fa0d" } } $('.js-work-strip[data-work-id=122447327]').each(function() { if (!$(this).data('initialized')) { new WowProfile.WorkStripView({ el: this, workJSON: {"id":122447327,"title":"A Fast Simulation Method for Damaged \u0026#x0D; Ship Dynamics\u0026#x0D","translated_title":"","metadata":{"publisher":"Multidisciplinary Digital Publishing Institute","ai_title_tag":"Fast Simulation of Flooded Ship Dynamics","grobid_abstract":"Ship accidents that entail flooding may lead to disastrous consequences which could be avoided or mitigated based on the knowledge of damaged ship dynamics. 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The dynamic behaviour of a damaged hull is a complex phenomenon involving the interaction of the flooded water and the ship motions. The presence of a damage opening allows water flow into and out from the compartment, which further complicates the mathematical description of the problem. A fast simulation method, based on the lumped mass approach, is developed and presented. The lumped mass path in space depends on free-surface inclinations that differ from the ship angles of the roll and pitch. The viscous effects in the floodwater dynamics are implemented based on the model for the dissipation of the energy of standing waves in rectangular rooms. The method applies to both the transient stage of flooding and to the dynamic behaviour of a flooded ship in regular waves. In the first case, viscous effects are implemented considering the water in the compartment variable with time. 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$(this).data('initialized', true); } }); $a.trackClickSource(".js-work-strip-work-link", "profile_work_strip") if (false) { Aedu.setUpFigureCarousel('profile-work-122447327-figures'); } }); </script> <div class="js-work-strip profile--work_container" data-work-id="122447323"><div class="profile--work_thumbnail hidden-xs"><a class="js-work-strip-work-link" data-click-track="profile-work-strip-thumbnail" rel="nofollow" href="https://www.academia.edu/122447323/FOILING_AROUND_THE_WORLD_first_lessons_learned_from_vendee_globe"><img alt="Research paper thumbnail of FOILING AROUND THE WORLD, first lessons learned from vendee globe" class="work-thumbnail" src="https://a.academia-assets.com/images/blank-paper.jpg" /></a></div><div class="wp-workCard wp-workCard_itemContainer"><div class="wp-workCard_item wp-workCard--title">FOILING AROUND THE WORLD, first lessons learned from vendee globe</div><div class="wp-workCard_item wp-workCard--actions"><span class="work-strip-bookmark-button-container"></span><span class="wp-workCard--action visible-if-viewed-by-owner inline-block" style="display: none;"><span class="js-profile-work-strip-edit-button-wrapper profile-work-strip-edit-button-wrapper" data-work-id="122447323"><a class="js-profile-work-strip-edit-button" tabindex="0"><span><i class="fa fa-pencil"></i></span><span>Edit</span></a></span></span></div><div class="wp-workCard_item wp-workCard--stats"><span><span><span class="js-view-count view-count u-mr2x" data-work-id="122447323"><i class="fa fa-spinner fa-spin"></i></span><script>$(function () { var workId = 122447323; 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$(this).data('initialized', true); } }); $a.trackClickSource(".js-work-strip-work-link", "profile_work_strip") if (false) { Aedu.setUpFigureCarousel('profile-work-122447323-figures'); } }); </script> <div class="js-work-strip profile--work_container" data-work-id="122447321"><div class="profile--work_thumbnail hidden-xs"><a class="js-work-strip-work-link" data-click-track="profile-work-strip-thumbnail" rel="nofollow" href="https://www.academia.edu/122447321/On_the_Effect_of_Viscous_Forces_on_the_Motion_of_High_Speed_Hulls"><img alt="Research paper thumbnail of On the Effect of Viscous Forces on the Motion of High Speed Hulls" class="work-thumbnail" src="https://a.academia-assets.com/images/blank-paper.jpg" /></a></div><div class="wp-workCard wp-workCard_itemContainer"><div class="wp-workCard_item wp-workCard--title">On the Effect of Viscous Forces on the Motion of High Speed Hulls</div><div class="wp-workCard_item"><span class="js-work-more-abstract-truncated">For fast slender hullforms, the damping forces due to the generated waves are so small that the d...</span><a class="js-work-more-abstract" data-broccoli-component="work_strip.more_abstract" data-click-track="profile-work-strip-more-abstract" href="javascript:;"><span> more </span><span><i class="fa fa-caret-down"></i></span></a><span class="js-work-more-abstract-untruncated hidden">For fast slender hullforms, the damping forces due to the generated waves are so small that the damping forces relative to viscosity cannot be neglected in evaluating the vertical motions. In this paper the numerical and experimental assessment of the vertical motions in head sea for three mono-hulls are presented. The considered hulls are fast slender displacement type with transom stern and L/B ratios 14, 12, 8. The most slender hull is a trimaran main hull, the second one is a catamaran demihull and the last one is the Model 5 (Blok and Beukelman, 1984). The calculations were performed using 2 \\ubd D high speed theory by Faltinsen and Zhao (1991). To obtain potential flow theory results the viscosity correction from the cross flow was added. The effect of the viscosity from cross flow was considered as reported by Lee (1977), Chan (1992), Centeno (2000). At the Trieste towing tank experimental program was conducted for the catamaran demihull and the trimaran main hull for four different speeds while for the Model 5 experimental data were collected from the literature. The effect of cross flow coefficients is evaluated and discussed, and empirical coefficients are set. Furthermore, the influence of slenderness ratio and speed is discussed and finally some conclusions are given</span></div><div class="wp-workCard_item wp-workCard--actions"><span class="work-strip-bookmark-button-container"></span><span class="wp-workCard--action visible-if-viewed-by-owner inline-block" style="display: none;"><span class="js-profile-work-strip-edit-button-wrapper profile-work-strip-edit-button-wrapper" data-work-id="122447321"><a class="js-profile-work-strip-edit-button" tabindex="0"><span><i class="fa fa-pencil"></i></span><span>Edit</span></a></span></span></div><div class="wp-workCard_item wp-workCard--stats"><span><span><span class="js-view-count view-count u-mr2x" data-work-id="122447321"><i class="fa fa-spinner fa-spin"></i></span><script>$(function () { var workId = 122447321; window.Academia.workViewCountsFetcher.queue(workId, function (count) { var description = window.$h.commaizeInt(count) + " " + window.$h.pluralize(count, 'View'); $(".js-view-count[data-work-id=122447321]").text(description); $(".js-view-count[data-work-id=122447321]").attr('title', description).tooltip(); }); });</script></span></span><span><span class="percentile-widget hidden"><span class="u-mr2x work-percentile"></span></span><script>$(function () { var workId = 122447321; window.Academia.workPercentilesFetcher.queue(workId, function (percentileText) { var container = $(".js-work-strip[data-work-id='122447321']"); container.find('.work-percentile').text(percentileText.charAt(0).toUpperCase() + percentileText.slice(1)); container.find('.percentile-widget').show(); container.find('.percentile-widget').removeClass('hidden'); }); });</script></span></div><div id="work-strip-premium-row-container"></div></div></div><script> require.config({ waitSeconds: 90 })(["https://a.academia-assets.com/assets/wow_profile-a9bf3a2bc8c89fa2a77156577594264ee8a0f214d74241bc0fcd3f69f8d107ac.js","https://a.academia-assets.com/assets/work_edit-ad038b8c047c1a8d4fa01b402d530ff93c45fee2137a149a4a5398bc8ad67560.js"], function() { // from javascript_helper.rb var dispatcherData = {} if (false){ window.WowProfile.dispatcher = window.WowProfile.dispatcher || _.clone(Backbone.Events); dispatcherData = { dispatcher: window.WowProfile.dispatcher, downloadLinkId: "-1" } } $('.js-work-strip[data-work-id=122447321]').each(function() { if (!$(this).data('initialized')) { new WowProfile.WorkStripView({ el: this, workJSON: {"id":122447321,"title":"On the Effect of Viscous Forces on the Motion of High Speed Hulls","translated_title":"","metadata":{"abstract":"For fast slender hullforms, the damping forces due to the generated waves are so small that the damping forces relative to viscosity cannot be neglected in evaluating the vertical motions. In this paper the numerical and experimental assessment of the vertical motions in head sea for three mono-hulls are presented. The considered hulls are fast slender displacement type with transom stern and L/B ratios 14, 12, 8. The most slender hull is a trimaran main hull, the second one is a catamaran demihull and the last one is the Model 5 (Blok and Beukelman, 1984). The calculations were performed using 2 \\\\ubd D high speed theory by Faltinsen and Zhao (1991). To obtain potential flow theory results the viscosity correction from the cross flow was added. The effect of the viscosity from cross flow was considered as reported by Lee (1977), Chan (1992), Centeno (2000). At the Trieste towing tank experimental program was conducted for the catamaran demihull and the trimaran main hull for four different speeds while for the Model 5 experimental data were collected from the literature. The effect of cross flow coefficients is evaluated and discussed, and empirical coefficients are set. Furthermore, the influence of slenderness ratio and speed is discussed and finally some conclusions are given","publication_date":{"day":null,"month":null,"year":2002,"errors":{}}},"translated_abstract":"For fast slender hullforms, the damping forces due to the generated waves are so small that the damping forces relative to viscosity cannot be neglected in evaluating the vertical motions. In this paper the numerical and experimental assessment of the vertical motions in head sea for three mono-hulls are presented. The considered hulls are fast slender displacement type with transom stern and L/B ratios 14, 12, 8. The most slender hull is a trimaran main hull, the second one is a catamaran demihull and the last one is the Model 5 (Blok and Beukelman, 1984). The calculations were performed using 2 \\\\ubd D high speed theory by Faltinsen and Zhao (1991). To obtain potential flow theory results the viscosity correction from the cross flow was added. The effect of the viscosity from cross flow was considered as reported by Lee (1977), Chan (1992), Centeno (2000). At the Trieste towing tank experimental program was conducted for the catamaran demihull and the trimaran main hull for four different speeds while for the Model 5 experimental data were collected from the literature. The effect of cross flow coefficients is evaluated and discussed, and empirical coefficients are set. Furthermore, the influence of slenderness ratio and speed is discussed and finally some conclusions are given","internal_url":"https://www.academia.edu/122447321/On_the_Effect_of_Viscous_Forces_on_the_Motion_of_High_Speed_Hulls","translated_internal_url":"","created_at":"2024-07-30T00:17:18.582-07:00","preview_url":null,"current_user_can_edit":null,"current_user_is_owner":null,"owner_id":3539088,"coauthors_can_edit":true,"document_type":"paper","co_author_tags":[],"downloadable_attachments":[],"slug":"On_the_Effect_of_Viscous_Forces_on_the_Motion_of_High_Speed_Hulls","translated_slug":"","page_count":null,"language":"en","content_type":"Work","summary":"For fast slender hullforms, the damping forces due to the generated waves are so small that the damping forces relative to viscosity cannot be neglected in evaluating the vertical motions. In this paper the numerical and experimental assessment of the vertical motions in head sea for three mono-hulls are presented. The considered hulls are fast slender displacement type with transom stern and L/B ratios 14, 12, 8. The most slender hull is a trimaran main hull, the second one is a catamaran demihull and the last one is the Model 5 (Blok and Beukelman, 1984). The calculations were performed using 2 \\\\ubd D high speed theory by Faltinsen and Zhao (1991). To obtain potential flow theory results the viscosity correction from the cross flow was added. The effect of the viscosity from cross flow was considered as reported by Lee (1977), Chan (1992), Centeno (2000). At the Trieste towing tank experimental program was conducted for the catamaran demihull and the trimaran main hull for four different speeds while for the Model 5 experimental data were collected from the literature. The effect of cross flow coefficients is evaluated and discussed, and empirical coefficients are set. Furthermore, the influence of slenderness ratio and speed is discussed and finally some conclusions are given","owner":{"id":3539088,"first_name":"Ermina","middle_initials":null,"last_name":"Begovic","page_name":"ErminaBegovic","domain_name":"unina","created_at":"2013-03-21T19:49:11.700-07:00","display_name":"Ermina Begovic","url":"https://unina.academia.edu/ErminaBegovic"},"attachments":[],"research_interests":[{"id":48,"name":"Engineering","url":"https://www.academia.edu/Documents/in/Engineering"},{"id":311657,"name":"Seakeeping","url":"https://www.academia.edu/Documents/in/Seakeeping"},{"id":319081,"name":"High Speed Craft","url":"https://www.academia.edu/Documents/in/High_Speed_Craft"},{"id":403398,"name":"Hull","url":"https://www.academia.edu/Documents/in/Hull"}],"urls":[{"id":43739843,"url":"https://arts.units.it/handle/11368/2563229"}]}, dispatcherData: dispatcherData }); $(this).data('initialized', true); } }); $a.trackClickSource(".js-work-strip-work-link", "profile_work_strip") if (false) { Aedu.setUpFigureCarousel('profile-work-122447321-figures'); 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