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(PDF) Aerodynamic Simulation of a High-Pressure Centrifugal Fan for Process Industries
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This paper reports on the simulation of the flow field in a large centrifugal fan designed for process industry applications. The aerodynamic investigation, at a preliminary level, highlights the critical regions inside the device and suggests possible modification to increase its duty life. This paper reports on the simulation of the flow field in a large centrifugal fan designed for process industry applications. The aerodynamic investigation, at a preliminary level, serves the aim of highlighting the critical regions inside the device and suggest possible modification to increase its duty life.","publication_date":"2013,,","publication_name":"Volume 4: Ceramics; Concentrating Solar Power Plants; Controls, Diagnostics and Instrumentation; Education; Electric Power; Fans and Blowers","grobid_abstract_attachment_id":"39741913"},"document_type":"paper","pre_hit_view_count_baseline":null,"quality":"high","language":"en","title":"Aerodynamic Simulation of a High-Pressure Centrifugal Fan for Process Industries","broadcastable":true,"draft":null,"has_indexable_attachment":true,"indexable":true}}["work"]; window.loswp.workCoauthors = [43577581,37764614]; window.loswp.locale = "en"; window.loswp.countryCode = "SG"; window.loswp.cwvAbTestBucket = ""; window.loswp.designVariant = "ds_vanilla"; window.loswp.fullPageMobileSutdModalVariant = "control"; window.loswp.useOptimizedScribd4genScript = false; window.loginModal = {}; window.loginModal.appleClientId = 'edu.academia.applesignon'; window.userInChina = "false";</script><script defer="" src="https://accounts.google.com/gsi/client"></script><div class="ds-loswp-container"><div class="ds-work-card--grid-container"><div class="ds-work-card--container js-loswp-work-card"><div class="ds-work-card--cover"><div class="ds-work-cover--wrapper"><div class="ds-work-cover--container"><button class="ds-work-cover--clickable js-swp-download-button" data-signup-modal="{"location":"swp-splash-paper-cover","attachmentId":39741913,"attachmentType":"pdf"}"><img alt="First page of “Aerodynamic Simulation of a High-Pressure Centrifugal Fan for Process Industries”" class="ds-work-cover--cover-thumbnail" src="https://0.academia-photos.com/attachment_thumbnails/39741913/mini_magick20190222-8432-1kimski.png?1550859604" /><img alt="PDF Icon" class="ds-work-cover--file-icon" src="//a.academia-assets.com/images/single_work_splash/adobe_icon.svg" /><div class="ds-work-cover--hover-container"><span class="material-symbols-outlined" style="font-size: 20px" translate="no">download</span><p>Download Free PDF</p></div><div class="ds-work-cover--ribbon-container">Download Free PDF</div><div class="ds-work-cover--ribbon-triangle"></div></button></div></div></div><div class="ds-work-card--work-information"><h1 class="ds-work-card--work-title">Aerodynamic Simulation of a High-Pressure Centrifugal Fan for Process Industries</h1><div class="ds-work-card--work-authors ds-work-card--detail"><a class="ds-work-card--author js-wsj-grid-card-author ds2-5-body-md ds2-5-body-link" data-author-id="43577581" href="https://independent.academia.edu/GeoffSheard"><img alt="Profile image of Geoff Sheard" class="ds-work-card--author-avatar" src="//a.academia-assets.com/images/s65_no_pic.png" />Geoff Sheard</a><a class="ds-work-card--author js-wsj-grid-card-author ds2-5-body-md ds2-5-body-link" data-author-id="37764614" href="https://uniroma1.academia.edu/PaoloVenturini"><img alt="Profile image of Paolo Venturini" class="ds-work-card--author-avatar" src="//a.academia-assets.com/images/s65_no_pic.png" />Paolo Venturini</a></div><div class="ds-work-card--detail"><p class="ds-work-card--detail ds2-5-body-sm">2013, Volume 4: Ceramics; Concentrating Solar Power Plants; Controls, Diagnostics and Instrumentation; Education; Electric Power; Fans and Blowers</p><div class="ds-work-card--work-metadata"><div class="ds-work-card--work-metadata__stat"><span class="material-symbols-outlined" style="font-size: 20px" translate="no">visibility</span><p class="ds2-5-body-sm" id="work-metadata-view-count">…</p></div><div class="ds-work-card--work-metadata__stat"><span class="material-symbols-outlined" style="font-size: 20px" translate="no">description</span><p class="ds2-5-body-sm">11 pages</p></div><div class="ds-work-card--work-metadata__stat"><span class="material-symbols-outlined" style="font-size: 20px" translate="no">link</span><p class="ds2-5-body-sm">1 file</p></div></div><script>(async () => { const workId = 17847283; const worksViewsPath = "/v0/works/views?subdomain_param=api&work_ids%5B%5D=17847283"; const getWorkViews = async (workId) => { const response = await fetch(worksViewsPath); if (!response.ok) { throw new Error('Failed to load work views'); 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This paper reports on the simulation of the flow field in a large centrifugal fan designed for process industry applications. The aerodynamic investigation, at a preliminary level, highlights the critical regions inside the device and suggests possible modification to increase its duty life. This paper reports on the simulation of the flow field in a large centrifugal fan designed for process industry applications. The aerodynamic investigation, at a preliminary level, serves the aim of highlighting the critical regions inside the device and suggest possible modification to increase its duty life.</p><div class="ds-work-card--button-container"><button class="ds2-5-button js-swp-download-button" data-signup-modal="{"location":"continue-reading-button--work-card","attachmentId":39741913,"attachmentType":"pdf","workUrl":"https://www.academia.edu/17847283/Aerodynamic_Simulation_of_a_High_Pressure_Centrifugal_Fan_for_Process_Industries"}">See full PDF</button><button class="ds2-5-button ds2-5-button--secondary js-swp-download-button" data-signup-modal="{"location":"download-pdf-button--work-card","attachmentId":39741913,"attachmentType":"pdf","workUrl":"https://www.academia.edu/17847283/Aerodynamic_Simulation_of_a_High_Pressure_Centrifugal_Fan_for_Process_Industries"}"><span class="material-symbols-outlined" style="font-size: 20px" translate="no">download</span>Download PDF</button></div><div class="ds-signup-banner-trigger-container"><div class="ds-signup-banner-trigger ds-signup-banner-trigger-control"></div></div><div class="ds-signup-banner ds-signup-banner-control"><div id="ds-signup-banner-close-button"><button class="ds2-5-button ds2-5-button--secondary ds2-5-button--inverse"><span class="material-symbols-outlined" style="font-size: 20px" translate="no">close</span></button></div><div class="ds-signup-banner-ctas"><img src="//a.academia-assets.com/images/academia-logo-capital-white.svg" /><h4 class="ds2-5-heading-serif-sm">Sign up for access to the world's latest research</h4><button class="ds2-5-button ds2-5-button--inverse ds2-5-button--full-width js-swp-download-button" data-signup-modal="{"location":"signup-banner"}">Sign up for free<span class="material-symbols-outlined" style="font-size: 20px" translate="no">arrow_forward</span></button></div><div class="ds-signup-banner-divider"></div><div class="ds-signup-banner-reasons"><div class="ds-signup-banner-reasons-item"><span class="material-symbols-outlined" style="font-size: 24px" translate="no">check</span><span>Get notified about relevant papers</span></div><div class="ds-signup-banner-reasons-item"><span class="material-symbols-outlined" style="font-size: 24px" translate="no">check</span><span>Save papers to use in your research</span></div><div class="ds-signup-banner-reasons-item"><span class="material-symbols-outlined" style="font-size: 24px" translate="no">check</span><span>Join the discussion with peers</span></div><div class="ds-signup-banner-reasons-item"><span class="material-symbols-outlined" style="font-size: 24px" translate="no">check</span><span>Track your impact</span></div></div></div><script>(() => { // Set up signup banner show/hide behavior: // 1. 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Two-dimensional instantaneous velocity measurement is done using particle image velocimetry (PIV). Numerical simulation of impeller-diffuser-volute interaction is performed using CFX-Tascflow commercial code. A frozen rotor simulation model is used for the steady calculation and a rotor-stator simulation model is used for the unsteady calculation using the steady results as an initial guess. The simulation results show that the separated flow regime near the diffuser hub extends to the volute. Comparison between the unsteady computation and those of measurement indicates that the rotor/stator model employed in the simulation predicts essential characteristics of unsteady flow in the centrifugal fan. However, quantitative agreement remain...</p><div class="ds-related-work--ctas"><button class="ds2-5-text-link ds2-5-text-link--inline js-swp-download-button" data-signup-modal="{"location":"wsj-grid-card-download-pdf-modal","work_title":"A Study of Impeller-Diffuser-Volute Interaction in a Centrifugal Fan","attachmentId":66834765,"attachmentType":"pdf","work_url":"https://www.academia.edu/47989779/A_Study_of_Impeller_Diffuser_Volute_Interaction_in_a_Centrifugal_Fan","alternativeTracking":true}"><span class="material-symbols-outlined" style="font-size: 18px" translate="no">download</span><span class="ds2-5-text-link__content">Download free PDF</span></button><a class="ds2-5-text-link ds2-5-text-link--inline js-wsj-grid-card-view-pdf" href="https://www.academia.edu/47989779/A_Study_of_Impeller_Diffuser_Volute_Interaction_in_a_Centrifugal_Fan"><span class="ds2-5-text-link__content">View PDF</span><span class="material-symbols-outlined" style="font-size: 18px" translate="no">chevron_right</span></a></div></div><div class="ds-related-work--container js-wsj-grid-card" data-collection-position="1" data-entity-id="113941832" data-sort-order="default"><a class="ds-related-work--title js-wsj-grid-card-title ds2-5-body-md ds2-5-body-link" href="https://www.academia.edu/113941832/Numerical_methodology_for_the_assessment_of_relative_and_absolute_deterministic_flow_structures_in_the_analysis_of_impeller_tongue_interactions_for_centrifugal_fans">Numerical methodology for the assessment of relative and absolute deterministic flow structures in the analysis of impeller–tongue interactions for centrifugal fans</a><div class="ds-related-work--metadata"><a class="js-wsj-grid-card-author ds2-5-body-sm ds2-5-body-link" data-author-id="285407980" href="https://independent.academia.edu/JoseGonz%C3%A1lez321">Jose González</a></div><p class="ds-related-work--metadata ds2-5-body-xs">Computers &amp; Fluids, 2013</p><p class="ds-related-work--abstract ds2-5-body-sm">In this paper a numerical methodology to segregate relative and absolute flow structures, allowing a deep analysis of the impeller-tongue interaction in centrifugal fans, is presented. The procedure, based on a deterministic decomposition of the internal flow fields, is applied for first time in blade-to-blade planes of radial turbomachinery. Previous numerical results, obtained with a viscous 3D unsteady solver, already validated by the authors and available in the literature, are used as a database for the numerical routines. Interpolation and relocating operations of the velocity fields between CFD meshes and post-processing grids are presented and performed for different flow rates of a squirrel cage fan. This numerical technique is shown as an ideal framework to advance in the physical comprehension of the complexity, three-dimensionality and unsteadiness of the flow structures in the interaction regions of centrifugal fans. Additionally, the different contributors to the unsteady forces on the blades are also addressed, providing a valuable insight to identify the origin of the interaction phenomena for both diagnosis and redesign criteria of impeller and volute geometries. The squirrel cage fan studied is a small centrifugal fan with a twin impeller configuration, each with 23 forward curved blades, a nominal flow rate at around 352 m 3 /h and a specific speed n s = 1.9. This type of squirrel cage fans is often used as blowers for automobile applications or for small industrial equipment. The flow in this kind of fans happens to be quite complex and with unsteady features. Unsteady flow separation at the machine inlet or at the impeller blades and a variety of flow induced vibrations is found for most of the operation conditions. In this context, the deterministic decomposition becomes an essential tool to analyze the main flow structures, like the evaluation of the non-uniformities induced by the volute tongue over the blade-to-blade distributions within the impeller. As a consequence, fluctuation levels in the blade loadings, derived from deterministic non-uniformities, can be provided in the relative frame of reference. The practical applications of the conclusions do imply a progress in the knowledge of the working parameters for machines that affect in a direct way to the passengers comfort.</p><div class="ds-related-work--ctas"><button class="ds2-5-text-link ds2-5-text-link--inline js-swp-download-button" data-signup-modal="{"location":"wsj-grid-card-download-pdf-modal","work_title":"Numerical methodology for the assessment of relative and absolute deterministic flow structures in the analysis of impeller–tongue interactions for centrifugal fans","attachmentId":110772041,"attachmentType":"pdf","work_url":"https://www.academia.edu/113941832/Numerical_methodology_for_the_assessment_of_relative_and_absolute_deterministic_flow_structures_in_the_analysis_of_impeller_tongue_interactions_for_centrifugal_fans","alternativeTracking":true}"><span class="material-symbols-outlined" style="font-size: 18px" translate="no">download</span><span class="ds2-5-text-link__content">Download free PDF</span></button><a class="ds2-5-text-link ds2-5-text-link--inline js-wsj-grid-card-view-pdf" href="https://www.academia.edu/113941832/Numerical_methodology_for_the_assessment_of_relative_and_absolute_deterministic_flow_structures_in_the_analysis_of_impeller_tongue_interactions_for_centrifugal_fans"><span class="ds2-5-text-link__content">View PDF</span><span class="material-symbols-outlined" style="font-size: 18px" translate="no">chevron_right</span></a></div></div><div class="ds-related-work--container js-wsj-grid-card" data-collection-position="2" data-entity-id="21674429" data-sort-order="default"><a class="ds-related-work--title js-wsj-grid-card-title ds2-5-body-md ds2-5-body-link" href="https://www.academia.edu/21674429/INFLUENCE_OF_NUMBER_OF_IMPELLER_AND_DIFFUSER_BLADES_ON_THE_PRESSURE_RECOVERY_OF_CENTRIFUGAL_FAN">INFLUENCE OF NUMBER OF IMPELLER AND DIFFUSER BLADES ON THE PRESSURE RECOVERY OF CENTRIFUGAL FAN</a><div class="ds-related-work--metadata"><a class="js-wsj-grid-card-author ds2-5-body-sm ds2-5-body-link" data-author-id="29235708" href="https://independent.academia.edu/eSATJournals">eSAT Journals</a></div><p class="ds-related-work--abstract ds2-5-body-sm">Impeller is a very important element in rotating devices to deliver energy to/from the fluid. The diffusers are essential for effective transformation of the kinetic power produced by the rotor in a centrifugal fan. Hence the flow in the impeller and diffuser passages is the important phenomenon in optimizing the performance. These impeller and diffuser flow passages are the most complex regions to predict the flow behavior. With the advanced development of Particle Image Velocimetry as well as convenient numerical CFD tools, it has become possible to reach at an accurate result well-matched with the real behavior of the flow. Hence, in this work moving mesh technique is used to get a numerical solution for the estimation of actual flow manner. Numerous research works have been done recently to get the physics of fluid flow through impeller and diffuser, both numerically and experimentally. But it is found from the literature that the study on the performance of the fan by changing the number of impeller and diffuser blades together in a combination has not been the emphasis of attention in these works. Hence a numerical analysis has been carried out in this paper to comprehensively lookout the fluid interaction in impeller-diffuser as well as to envisage the flow behavior of the fan by changing the number of impeller and diffuser blades together in combination. For the same number of impeller blades, it is found from the analysis that a higher static pressure rise coefficient is achieved at the outlet of the fan for smaller number of diffuser blades. It is also found that larger the number of impeller blades, larger is the static pressure rise coefficient for the same number of diffuser blades, hence performance gets improved.</p><div class="ds-related-work--ctas"><button class="ds2-5-text-link ds2-5-text-link--inline js-swp-download-button" data-signup-modal="{"location":"wsj-grid-card-download-pdf-modal","work_title":"INFLUENCE OF NUMBER OF IMPELLER AND DIFFUSER BLADES ON THE PRESSURE RECOVERY OF CENTRIFUGAL FAN","attachmentId":42357780,"attachmentType":"pdf","work_url":"https://www.academia.edu/21674429/INFLUENCE_OF_NUMBER_OF_IMPELLER_AND_DIFFUSER_BLADES_ON_THE_PRESSURE_RECOVERY_OF_CENTRIFUGAL_FAN","alternativeTracking":true}"><span class="material-symbols-outlined" style="font-size: 18px" translate="no">download</span><span class="ds2-5-text-link__content">Download free PDF</span></button><a class="ds2-5-text-link ds2-5-text-link--inline js-wsj-grid-card-view-pdf" href="https://www.academia.edu/21674429/INFLUENCE_OF_NUMBER_OF_IMPELLER_AND_DIFFUSER_BLADES_ON_THE_PRESSURE_RECOVERY_OF_CENTRIFUGAL_FAN"><span class="ds2-5-text-link__content">View PDF</span><span class="material-symbols-outlined" style="font-size: 18px" translate="no">chevron_right</span></a></div></div><div class="ds-related-work--container js-wsj-grid-card" data-collection-position="3" data-entity-id="12479856" data-sort-order="default"><a class="ds-related-work--title js-wsj-grid-card-title ds2-5-body-md ds2-5-body-link" href="https://www.academia.edu/12479856/An_experimental_investigation_of_the_flow_field_pattern_within_the_impeller_of_a_cross_flow_fan">An experimental investigation of the flow field pattern within the impeller of a cross-flow fan</a><div class="ds-related-work--metadata"><a class="js-wsj-grid-card-author ds2-5-body-sm ds2-5-body-link" data-author-id="31326326" href="https://independent.academia.edu/AndreaLazzaretto">Andrea Lazzaretto</a></div><p class="ds-related-work--metadata ds2-5-body-xs">Experimental Thermal and Fluid Science, 2004</p><p class="ds-related-work--abstract ds2-5-body-sm">Cross-flow fan performance is strongly influenced by the geometry of the casing, as the latter, in turn, affects the position and the strength of the eccentric vortex that characterizes the operation of this category of fans. The paper presents a systematic experimental investigation of the flow field within the impeller at different throttling conditions and for different geometries of the fan casing. Both pressures and velocities are measured using a three-dimensional five-hole probe that is inserted in the flow. This study helps determine the relationship between the design parameters of the casing and the flow field pattern, and it is part of an extensive work, by the same research group, aimed at establishing a general theory on cross-flow fan operation and at outlining the design guidelines for this particular type of turbomachines.</p><div class="ds-related-work--ctas"><button class="ds2-5-text-link ds2-5-text-link--inline js-swp-download-button" data-signup-modal="{"location":"wsj-grid-card-download-pdf-modal","work_title":"An experimental investigation of the flow field pattern within the impeller of a cross-flow fan","attachmentId":46152834,"attachmentType":"pdf","work_url":"https://www.academia.edu/12479856/An_experimental_investigation_of_the_flow_field_pattern_within_the_impeller_of_a_cross_flow_fan","alternativeTracking":true}"><span class="material-symbols-outlined" style="font-size: 18px" translate="no">download</span><span class="ds2-5-text-link__content">Download free PDF</span></button><a class="ds2-5-text-link ds2-5-text-link--inline js-wsj-grid-card-view-pdf" href="https://www.academia.edu/12479856/An_experimental_investigation_of_the_flow_field_pattern_within_the_impeller_of_a_cross_flow_fan"><span class="ds2-5-text-link__content">View PDF</span><span class="material-symbols-outlined" style="font-size: 18px" translate="no">chevron_right</span></a></div></div><div class="ds-related-work--container js-wsj-grid-card" data-collection-position="4" data-entity-id="8951280" data-sort-order="default"><a class="ds-related-work--title js-wsj-grid-card-title ds2-5-body-md ds2-5-body-link" href="https://www.academia.edu/8951280/Numerical_investigation_of_the_flow_instabilities_in_centri_fugal_fan">Numerical investigation of the flow instabilities in centri fugal fan</a><div class="ds-related-work--metadata"><a class="js-wsj-grid-card-author ds2-5-body-sm ds2-5-body-link" data-author-id="19882162" href="https://unizg.academia.edu/StanislavSviderek">Stanislav Sviderek</a></div><p class="ds-related-work--metadata ds2-5-body-xs">2006</p><div class="ds-related-work--ctas"><button class="ds2-5-text-link ds2-5-text-link--inline js-swp-download-button" data-signup-modal="{"location":"wsj-grid-card-download-pdf-modal","work_title":"Numerical investigation of the flow instabilities in centri fugal fan","attachmentId":35270497,"attachmentType":"pdf","work_url":"https://www.academia.edu/8951280/Numerical_investigation_of_the_flow_instabilities_in_centri_fugal_fan","alternativeTracking":true}"><span class="material-symbols-outlined" style="font-size: 18px" translate="no">download</span><span class="ds2-5-text-link__content">Download free PDF</span></button><a class="ds2-5-text-link ds2-5-text-link--inline js-wsj-grid-card-view-pdf" href="https://www.academia.edu/8951280/Numerical_investigation_of_the_flow_instabilities_in_centri_fugal_fan"><span class="ds2-5-text-link__content">View PDF</span><span class="material-symbols-outlined" style="font-size: 18px" translate="no">chevron_right</span></a></div></div><div class="ds-related-work--container js-wsj-grid-card" data-collection-position="5" data-entity-id="4603224" data-sort-order="default"><a class="ds-related-work--title js-wsj-grid-card-title ds2-5-body-md ds2-5-body-link" href="https://www.academia.edu/4603224/Study_of_tip_clearance_effects_in_centrifugal_fans_with_unshrouded_impellers_using_computational_fluid_dynamics">Study of tip clearance effects in centrifugal fans with unshrouded impellers using computational fluid dynamics</a><div class="ds-related-work--metadata"><a class="js-wsj-grid-card-author ds2-5-body-sm ds2-5-body-link" data-author-id="5789302" href="https://sakarya.academia.edu/TahsinEngin">Tahsin Engin</a></div><p class="ds-related-work--metadata ds2-5-body-xs">Proceedings of The Institution of Mechanical Engineers Part A-journal of Power and Energy, 2006</p><p class="ds-related-work--abstract ds2-5-body-sm">Performance of centrifugal fans with unshrouded impellers strongly depends upon complex configuration of the asymmetrical flowfield in the axial direction, which is highly unsteady. The flowfield, in turn, is considerably affected by the design parameters of both scroll and impeller geometry, for which tip clearance is of particular interest. This article presents a three-dimensional computational fluid dynamics (CFD) simulation of the flowfield in three different unshrouded centrifugal fan impellers with varying tip clearances. A commercial CFD code, namely, Fluent V6.2.16 with a k -1 two-equation turbulence model was utilized in order to study the effects of tip clearance on the overall performance of each fan with the tip clearances ranging from 5 to 30 mm. The numerical results were compared with the experimental data reported previously in the literature by the present author and his colleagues, and excellent agreements were observed for each fan.</p><div class="ds-related-work--ctas"><button class="ds2-5-text-link ds2-5-text-link--inline js-swp-download-button" data-signup-modal="{"location":"wsj-grid-card-download-pdf-modal","work_title":"Study of tip clearance effects in centrifugal fans with unshrouded impellers using computational fluid dynamics","attachmentId":49762157,"attachmentType":"pdf","work_url":"https://www.academia.edu/4603224/Study_of_tip_clearance_effects_in_centrifugal_fans_with_unshrouded_impellers_using_computational_fluid_dynamics","alternativeTracking":true}"><span class="material-symbols-outlined" style="font-size: 18px" translate="no">download</span><span class="ds2-5-text-link__content">Download free PDF</span></button><a class="ds2-5-text-link ds2-5-text-link--inline js-wsj-grid-card-view-pdf" href="https://www.academia.edu/4603224/Study_of_tip_clearance_effects_in_centrifugal_fans_with_unshrouded_impellers_using_computational_fluid_dynamics"><span class="ds2-5-text-link__content">View PDF</span><span class="material-symbols-outlined" style="font-size: 18px" translate="no">chevron_right</span></a></div></div><div class="ds-related-work--container js-wsj-grid-card" data-collection-position="6" data-entity-id="62038842" data-sort-order="default"><a class="ds-related-work--title js-wsj-grid-card-title ds2-5-body-md ds2-5-body-link" href="https://www.academia.edu/62038842/Novel_methods_for_axial_fan_impeller_geometry_analysis_and_experimental_investigations_of_the_generated_swirl_turbulent_flow">Novel methods for axial fan impeller geometry analysis and experimental investigations of the generated swirl turbulent flow</a><div class="ds-related-work--metadata"><a class="js-wsj-grid-card-author ds2-5-body-sm ds2-5-body-link" data-author-id="50361879" href="https://independent.academia.edu/MilosNedeljkovic2">Milos Nedeljkovic</a></div><p class="ds-related-work--metadata ds2-5-body-xs">Thermal …, 2010</p><p class="ds-related-work--abstract ds2-5-body-sm">Geometry analysis of the axial fan impeller, experimentally obtained operating characteristics and experimental investigations of the turbulent swirl flow generated behind the impeller are presented in this paper. Formerly designed and manufactured, axial fan impeller blade geometry (originally designed by Prof. Dr-Ing. Z. Protić †) has been digitized using a three-dimensional scanner. In parallel, the same impeller has been modeled by beta version software for modeling axial turbomachines, based on modified classical calculation. These results were compared. Afterwards, the axial fan operating characteristics were measured on the standardized test rig in the Laboratory for Hydraulic Machinery and Energy Systems, Faculty of Mechanical Engineering, University of Belgrade. Optimum blade impeller position was determined on the basis of these results. Afterwards, impeller with angle 22, without outlet vanes, was positioned in a circular pipe. Rotational speed has been varied in the range from 500 till 2500 rpm. Reynolds numbers generated in this way, calculated for axial velocity component, was in the range from 0.68·10 5 till 2.5·10 5. Laser Doppler anemometry measurements and stereo particle image velocimetry measurements of the three-dimensional velocity field in the swirl turbulent fluid flow behind the axial fan have been performed for each regime. Obtained results point out extraordinary complexity of the structure of generated three-dimensional turbulent velocity fields.</p><div class="ds-related-work--ctas"><button class="ds2-5-text-link ds2-5-text-link--inline js-swp-download-button" data-signup-modal="{"location":"wsj-grid-card-download-pdf-modal","work_title":"Novel methods for axial fan impeller geometry analysis and experimental investigations of the generated swirl turbulent flow","attachmentId":74908617,"attachmentType":"pdf","work_url":"https://www.academia.edu/62038842/Novel_methods_for_axial_fan_impeller_geometry_analysis_and_experimental_investigations_of_the_generated_swirl_turbulent_flow","alternativeTracking":true}"><span class="material-symbols-outlined" style="font-size: 18px" translate="no">download</span><span class="ds2-5-text-link__content">Download free PDF</span></button><a class="ds2-5-text-link ds2-5-text-link--inline js-wsj-grid-card-view-pdf" href="https://www.academia.edu/62038842/Novel_methods_for_axial_fan_impeller_geometry_analysis_and_experimental_investigations_of_the_generated_swirl_turbulent_flow"><span class="ds2-5-text-link__content">View PDF</span><span class="material-symbols-outlined" style="font-size: 18px" translate="no">chevron_right</span></a></div></div><div class="ds-related-work--container js-wsj-grid-card" data-collection-position="7" data-entity-id="17847282" data-sort-order="default"><a class="ds-related-work--title js-wsj-grid-card-title ds2-5-body-md ds2-5-body-link" href="https://www.academia.edu/17847282/Simulation_of_Particle_Laden_Flows_in_a_Large_Centrifugal_Fan_for_Erosion_Prediction">Simulation of Particle-Laden Flows in a Large Centrifugal Fan for Erosion Prediction</a><div class="ds-related-work--metadata"><a class="js-wsj-grid-card-author ds2-5-body-sm ds2-5-body-link" data-author-id="37764614" href="https://uniroma1.academia.edu/PaoloVenturini">Paolo Venturini</a></div><p class="ds-related-work--metadata ds2-5-body-xs">Volume 1A: Aircraft Engine; Fans and Blowers, 2014</p><p class="ds-related-work--abstract ds2-5-body-sm">Regulations require that industrial fans utilised in power generation, cement and steel applications must operate as part of a process that produces erosive particles. Over time these erosive particles erode centrifugal fan impeller blades, changing the blade profile and consequently, degrading fan performance. To replace the eroded impellers, operators must shut down the process. If one must replace an impeller between scheduled maintenance intervals, the associated costs with lost production become significant. Consequently, the industrial fan community is interested in predicting the erosion, and ultimately, a fan impeller's in-service life when operating in an erosive environment. Industrial fan designers face challenges when attempting to predict impeller erosion. Industrial centrifugal fan impeller blades are routinely constructed from cambered plate, usually with backward or forward sweeping, with the inevitable consequence of separated flow regions. This separated flow is within a highly three dimensional flow-field making difficult an accurate prediction of the flow-field though an impeller with cambered plate blades. Assuming that one can accurately predict this three dimensional flow-field one must then go on to simulate the erosive particles' trajectory.</p><div class="ds-related-work--ctas"><button class="ds2-5-text-link ds2-5-text-link--inline js-swp-download-button" data-signup-modal="{"location":"wsj-grid-card-download-pdf-modal","work_title":"Simulation of Particle-Laden Flows in a Large Centrifugal Fan for Erosion Prediction","attachmentId":39741906,"attachmentType":"pdf","work_url":"https://www.academia.edu/17847282/Simulation_of_Particle_Laden_Flows_in_a_Large_Centrifugal_Fan_for_Erosion_Prediction","alternativeTracking":true}"><span class="material-symbols-outlined" style="font-size: 18px" translate="no">download</span><span class="ds2-5-text-link__content">Download free PDF</span></button><a class="ds2-5-text-link ds2-5-text-link--inline js-wsj-grid-card-view-pdf" href="https://www.academia.edu/17847282/Simulation_of_Particle_Laden_Flows_in_a_Large_Centrifugal_Fan_for_Erosion_Prediction"><span class="ds2-5-text-link__content">View PDF</span><span class="material-symbols-outlined" style="font-size: 18px" translate="no">chevron_right</span></a></div></div><div class="ds-related-work--container js-wsj-grid-card" data-collection-position="8" data-entity-id="114569043" data-sort-order="default"><a class="ds-related-work--title js-wsj-grid-card-title ds2-5-body-md ds2-5-body-link" href="https://www.academia.edu/114569043/Effect_of_Blade_Slot_Inclination_Angle_on_Flow_Separation_in_The_Centrifugal_Fan_Impeller">Effect of Blade Slot Inclination Angle on Flow Separation in The Centrifugal Fan Impeller</a><div class="ds-related-work--metadata"><a class="js-wsj-grid-card-author ds2-5-body-sm ds2-5-body-link" data-author-id="72278429" href="https://benha.academia.edu/SBeskales">Samer A N W A R Beskales</a></div><p class="ds-related-work--metadata ds2-5-body-xs">ERJSH, 2023</p><p class="ds-related-work--abstract ds2-5-body-sm">The use of slotted blades for centrifugal fan impellers improves fluid flow steadiness and reduces fan noise. The slots create a jet of fluid from the pressure side to the suction side that increases the momentum of the main flow and postpones t he flow separation. In addition, these slots make the fluid movement smoother and more efficient in impeller passages. In previous research, the optimum slot location was determined at 40% from the leading edge (at diameter Ds=0.65 DImpeller) with a 2.5 mm width. The present research concentrates on determining the optimum slot jet angle of a ten-blade backward curved centrifugal fan at the best efficiency point (BEP). Six values of slot inclination angles, namely θS1, θS2, θS3, θS4, θS5 and θS6, ranging from an inward slot direction of (+60°) to an outward direction of (-80°), are simulated numerically using an unsteady Computational Fluid Dynamics (CFD) model. The CFD results have proven the benefits of the outward slots that ranged from (θS=-60° to-80°) on stall control of the fluid on the blade suction side compared with the inward slots. At the BEP, the computed performance of the tested fan with an outward slot inclination angle θS6 =-80° showed a 2.6 percent efficiency improvement compared to fans with an inward slot of θS1=+60°. Generally, the outward slot direction has a positive effect on the boundary layer attachment on the suction side of the blade.</p><div class="ds-related-work--ctas"><button class="ds2-5-text-link ds2-5-text-link--inline js-swp-download-button" data-signup-modal="{"location":"wsj-grid-card-download-pdf-modal","work_title":"Effect of Blade Slot Inclination Angle on Flow Separation in The Centrifugal Fan Impeller","attachmentId":111233282,"attachmentType":"pdf","work_url":"https://www.academia.edu/114569043/Effect_of_Blade_Slot_Inclination_Angle_on_Flow_Separation_in_The_Centrifugal_Fan_Impeller","alternativeTracking":true}"><span class="material-symbols-outlined" style="font-size: 18px" translate="no">download</span><span class="ds2-5-text-link__content">Download free PDF</span></button><a class="ds2-5-text-link ds2-5-text-link--inline js-wsj-grid-card-view-pdf" href="https://www.academia.edu/114569043/Effect_of_Blade_Slot_Inclination_Angle_on_Flow_Separation_in_The_Centrifugal_Fan_Impeller"><span class="ds2-5-text-link__content">View PDF</span><span class="material-symbols-outlined" style="font-size: 18px" translate="no">chevron_right</span></a></div></div><div class="ds-related-work--container js-wsj-grid-card" data-collection-position="9" data-entity-id="127450036" data-sort-order="default"><a class="ds-related-work--title js-wsj-grid-card-title ds2-5-body-md ds2-5-body-link" href="https://www.academia.edu/127450036/Study_of_particle_dynamics_and_erosion_in_a_centrifugal_fan">Study of particle dynamics and erosion in a centrifugal fan</a><div class="ds-related-work--metadata"><a class="js-wsj-grid-card-author ds2-5-body-sm ds2-5-body-link" data-author-id="50218414" href="https://usthb.academia.edu/AdelGhenaiet">Adel Ghenaiet</a></div><p class="ds-related-work--metadata ds2-5-body-xs">14th European Conference on Turbomachinery Fluid Dynamics and Thermodynamics, 2021</p><p class="ds-related-work--abstract ds2-5-body-sm">Fans in industrial plants are exposed to erosion due to air flows loaded by solid particles. Impellers with cambered plates lead to highly three dimensional flows with separated regions, rendering particle dynamics even more complex. This paper studies particle trajectories and erosion through a centrifugal fan based on a Lagrangian tracking approach and a semi empirical correlation of erosion rate. The obtained results show that the flow conditions, particle size and concentration strongly affect the particle dynamics, impact locations and erosion rates. Results show large non-uniformities in erosion distribution mainly over the hub and blade pressure side added to spiral casing. Erosion patterns are analyzed to reveal the effects of flow conditions, particle size and concentration. The obtained results may assist the fan producers in identifying the critical regions of erosion wear and to provide the basis for modifying the impeller design and propose adequate coating. KEYWORDS Centrifugal fan; Particulate flow; Particle trajectory; Erosion NOMENCLATURE C D drag coefficient d diameter e particle restitution factor F D drag force F LS Saffman force g gravity m mass r radius, radial co-ordinate Re Reynolds number t time V f V p fluid velocity particle velocity z axial co-ordinate Greek impact angle (deg) erosion rate (mg/g) dynamic viscosity (kg/m.s) density (kg/m 3 ) speed of rotation (rad/s)</p><div class="ds-related-work--ctas"><button class="ds2-5-text-link ds2-5-text-link--inline js-swp-download-button" data-signup-modal="{"location":"wsj-grid-card-download-pdf-modal","work_title":"Study of particle dynamics and erosion in a centrifugal fan","attachmentId":121179744,"attachmentType":"pdf","work_url":"https://www.academia.edu/127450036/Study_of_particle_dynamics_and_erosion_in_a_centrifugal_fan","alternativeTracking":true}"><span class="material-symbols-outlined" style="font-size: 18px" translate="no">download</span><span class="ds2-5-text-link__content">Download free PDF</span></button><a class="ds2-5-text-link ds2-5-text-link--inline js-wsj-grid-card-view-pdf" href="https://www.academia.edu/127450036/Study_of_particle_dynamics_and_erosion_in_a_centrifugal_fan"><span class="ds2-5-text-link__content">View PDF</span><span class="material-symbols-outlined" style="font-size: 18px" translate="no">chevron_right</span></a></div></div></div></div><div class="ds-sticky-ctas--wrapper js-loswp-sticky-ctas hidden"><div class="ds-sticky-ctas--grid-container"><div class="ds-sticky-ctas--container"><button class="ds2-5-button js-swp-download-button" data-signup-modal="{"location":"continue-reading-button--sticky-ctas","attachmentId":39741913,"attachmentType":"pdf","workUrl":null}">See full PDF</button><button class="ds2-5-button ds2-5-button--secondary js-swp-download-button" data-signup-modal="{"location":"download-pdf-button--sticky-ctas","attachmentId":39741913,"attachmentType":"pdf","workUrl":null}"><span class="material-symbols-outlined" style="font-size: 20px" translate="no">download</span>Download PDF</button></div></div></div><div class="ds-below-fold--grid-container"><div class="ds-work--container js-loswp-embedded-document"><div class="attachment_preview" data-attachment="Attachment_39741913" style="display: none"><div class="js-scribd-document-container"><div class="scribd--document-loading js-scribd-document-loader" style="display: block;"><img alt="Loading..." src="//a.academia-assets.com/images/loaders/paper-load.gif" /><p>Loading Preview</p></div></div><div style="text-align: center;"><div class="scribd--no-preview-alert js-preview-unavailable"><p>Sorry, preview is currently unavailable. You can download the paper by clicking the button above.</p></div></div></div></div><div class="ds-sidebar--container js-work-sidebar"><div class="ds-related-content--container"><h2 class="ds-related-content--heading">Related papers</h2><div class="ds-related-work--container js-related-work-sidebar-card" data-collection-position="0" data-entity-id="15462511" data-sort-order="default"><a class="ds-related-work--title js-related-work-grid-card-title ds2-5-body-md ds2-5-body-link" href="https://www.academia.edu/15462511/Flow_Generated_by_Radial_Flow_Impellers_PIV_Measurements_and_CFD_Simulations">Flow Generated by Radial Flow Impellers: PIV Measurements and CFD Simulations</a><div class="ds-related-work--metadata"><a class="js-related-work-grid-card-author ds2-5-body-sm ds2-5-body-link" data-author-id="53288388" href="https://independent.academia.edu/CatherineXuereb">Catherine Xuereb</a><span>, </span><a class="js-related-work-grid-card-author ds2-5-body-sm ds2-5-body-link" data-author-id="34689631" href="https://univ-toulouse.academia.edu/JoelleAubin">Joelle Aubin</a><span>, </span><a class="js-related-work-grid-card-author ds2-5-body-sm ds2-5-body-link" data-author-id="34608522" href="https://independent.academia.edu/NathalieLeSauze">Nathalie Le Sauze</a><span>, </span><a class="js-related-work-grid-card-author ds2-5-body-sm ds2-5-body-link" data-author-id="20117880" href="https://independent.academia.edu/VivekRanade">Vivek Ranade</a></div><p class="ds-related-work--metadata ds2-5-body-xs">International Journal of Chemical Reactor Engineering, 2000</p><div class="ds-related-work--ctas"><button class="ds2-5-text-link ds2-5-text-link--inline js-swp-download-button" data-signup-modal="{"location":"wsj-grid-card-download-pdf-modal","work_title":"Flow Generated by Radial Flow Impellers: PIV Measurements and CFD 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