Defect and Diffusion Forum Vol. 406

<!DOCTYPE html> <html lang="en" dir="ltr"> <head> <meta name="format-detection" content="telephone=no"> <meta name="viewport" content="width=device-width, initial-scale=1.0" /> <meta charset="utf-8"> <meta http-equiv="X-UA-Compatible" content="IE=edge"> <meta name="description" content="This volume contains articles reflected the last results in numerical simulation of transfer phenomena in heat and fluid flow in the various technical systems and also includes descriptions of engineering decisions for the improvement of effective using renewable energy. The presented issue will be useful for a wide range of engineers and researchers from many branches of engineering science." /> <link rel="canonical" href="https://www.scientific.net/DDF.406" /> <meta property="og:title" content="Defect and Diffusion Forum Vol. 406 | Scientific.Net" /> <meta property="og:type" content="website" /> <meta property="og:url" content="https://www.scientific.net/DDF.406" /> <meta property="og:image" content="/Content/app/scinet5/images/metadata_logo.png" /> <meta property="og:image:type" content="image/png" /> <meta property="og:image:width" content="261" /> <meta property="og:image:height" content="260" /> <meta property="og:image:alt" content="Scientific.Net Logo" /> <title>Defect and Diffusion Forum Vol. 406 | Scientific.Net</title> <link href="/Content/app/scinet5/images/favicon.ico" rel="shortcut icon" /> <link href="/Content/public.min.css?v=BKBihgCkUm340JBGsNjEPtWz8I22CUsubMPC3V1WYzw" rel="stylesheet" /> <link rel="preconnect" href="https://www.google-analytics.com"> <link rel="preconnect" href="https://www.gstatic.com"> <link rel="preconnect" href="https://www.googletagmanager.com"> <link rel="icon" href="/Content/app/scinet5/images/favicon.ico"> <link rel="apple-touch-icon" href="/Content/app/scinet5/images/apple-touch-icon.png"> <link rel="preconnect" href="https://fonts.googleapis.com"> <link rel="preconnect" href="https://fonts.gstatic.com" crossorigin> <link href="https://fonts.googleapis.com/css?family=Open+Sans+Condensed:300,700%7COpen+Sans:300i,400,400i,600,600i,700&display=swap" rel="stylesheet">    <script> (function(w,d,s,l,i){w[l]=w[l]||[];w[l].push({'gtm.start': new Date().getTime(),event:'gtm.js'});var f=d.getElementsByTagName(s)[0], j=d.createElement(s),dl=l!='dataLayer'?'&l='+l:'';j.async=true;j.src= 'https://www.googletagmanager.com/gtm.js?id='+i+dl;f.parentNode.insertBefore(j,f); })(window,document,'script','dataLayer','GTM-T3VDKWV');</script>  </head> <body> <noscript>  <iframe src="https://www.googletagmanager.com/ns.html?id=GTM-T3VDKWV" height="0" width="0" style="display:none;visibility:hidden"></iframe> </noscript> <div class="sc-content-container"> <div class="sc-content"> <div class="header-menu-container"> <div class="identity-menu-container header-menu-container-not-logged-in"> <div class="container"> <div class="row"> <ul class="role-menu"> <li class="user-menu between normal-user-menu"> <div class="hdivider-100"></div> <div class="cart-info"> <a href="https://main.scientific.net/Payment/Cart"> <i class="inline-icon cart-icon-white"></i> <span id="cartInfoTotalItemsCount"></span> </a> </div> <div class="user-menu-login-or-register"> <a href="https://main.scientific.net/Account/Registration?ReturnUrl=https%3A%2F%2Fwww.scientific.net%2FDDF.406" rel="nofollow"> Registration </a> <a href="https://main.scientific.net/Account/Login?ReturnUrl=https%3A%2F%2Fwww.scientific.net%2FDDF.406" rel="nofollow"> Log In </a> </div> </li> </ul> </div> </div> </div> <div class="header-fluid"> <div class="container"> <div class="row"> <div class="block-header"> <div class="logo-block"> <a href="/" class="application-logo inline-icon logo-icon"></a> <div class="burger-menu-button visible-xs"> <div class="hamburger-box"> <div class="hamburger-inner"></div> </div> </div> </div> <div class="menu-and-search-block"> <div class="burger-menu"> <nav class="burger-menu-items"> <div class="public-menu"> <ul> <li><a href="/ForLibraries">For Libraries</a></li> <li><a href="/ForPublication/Paper">For Publication</a></li> <li><a href="/DocuCenter">Downloads</a></li> <li><a href="/news/all">News</a></li> <li><a href="/Home/AboutUs">About Us</a></li> <li><a href="/Home/Contacts">Contact Us</a></li> </ul> </div> </nav> </div> <div class="header-menu-top"> <div class="header-menu-list"> <a href="/ForLibraries">For Libraries</a> <a href="/ForPublication/Paper">For Publication</a> <a href="/DocuCenter">Downloads</a> <a href="/news/all">News</a> <a href="/Home/AboutUs">About Us</a> <a href="/Home/Contacts">Contact Us</a> </div> </div> <div class="search-block"> <input class="search-control" type="search" placeholder="Search" data-url="/Search"> <button class="button button-95 button-grey search-btn button-simple"> <span class="hidden-xs">Search</span> <i class="inline-icon search-icon-grey visible-xs"></i> </button> </div> </div> </div> </div> </div> </div> </div> <div class="container-fluid"> <div class="row"> <div class="banner-new"></div> </div> </div> <div class="content"> <div class="container"> <div class="row content-container"> <div class="left-content col-md-4 col-sm-5"> <div class="left-content-first-line icon-container mobile-collapse-button"> <div class="page-name-block underline-begin sibling-name-block"> <div class="page-name-block-text"> Volumes <a class="left-content-expand-button"><i class="inline-icon arrow-right-black no-hover-icon on-focus-arrow-down-black"></i></a> </div> </div> </div> <div class="row mobile-collapse-content"> <a href="/DDF.412" class="normal-large-text icon-container"> <div class="element-list"> <div class="element-list-text"> Defect and Diffusion Forum <br /> <span class="paper-volume-number">Vol. 412</span> </div> <div class="element-list-arrow"> <i class="inline-icon arrow-right-black no-focus-icon on-hover-arrow-left-red"></i> </div> </div> </a> <a href="/DDF.411" class="normal-large-text icon-container"> <div class="element-list"> <div class="element-list-text"> Defect and Diffusion Forum <br /> <span class="paper-volume-number">Vol. 411</span> </div> <div class="element-list-arrow"> <i class="inline-icon arrow-right-black no-focus-icon on-hover-arrow-left-red"></i> </div> </div> </a> <a href="/DDF.410" class="normal-large-text icon-container"> <div class="element-list"> <div class="element-list-text"> Defect and Diffusion Forum <br /> <span class="paper-volume-number">Vol. 410</span> </div> <div class="element-list-arrow"> <i class="inline-icon arrow-right-black no-focus-icon on-hover-arrow-left-red"></i> </div> </div> </a> <a href="/DDF.409" class="normal-large-text icon-container"> <div class="element-list"> <div class="element-list-text"> Defect and Diffusion Forum <br /> <span class="paper-volume-number">Vol. 409</span> </div> <div class="element-list-arrow"> <i class="inline-icon arrow-right-black no-focus-icon on-hover-arrow-left-red"></i> </div> </div> </a> <a href="/DDF.408" class="normal-large-text icon-container"> <div class="element-list"> <div class="element-list-text"> Defect and Diffusion Forum <br /> <span class="paper-volume-number">Vol. 408</span> </div> <div class="element-list-arrow"> <i class="inline-icon arrow-right-black no-focus-icon on-hover-arrow-left-red"></i> </div> </div> </a> <a href="/DDF.407" class="normal-large-text icon-container"> <div class="element-list"> <div class="element-list-text"> Defect and Diffusion Forum <br /> <span class="paper-volume-number">Vol. 407</span> </div> <div class="element-list-arrow"> <i class="inline-icon arrow-right-black no-focus-icon on-hover-arrow-left-red"></i> </div> </div> </a> <a href="/DDF.406" class="normal-large-text icon-container active-element active"> <div class="element-list"> <div class="element-list-text"> Defect and Diffusion Forum <br /> <span class="paper-volume-number">Vol. 406</span> </div> <div class="element-list-arrow"> <i class="inline-icon arrow-right-black no-focus-icon on-hover-arrow-left-red"></i> </div> </div> </a> <a href="/DDF.405" class="normal-large-text icon-container"> <div class="element-list"> <div class="element-list-text"> Defect and Diffusion Forum <br /> <span class="paper-volume-number">Vol. 405</span> </div> <div class="element-list-arrow"> <i class="inline-icon arrow-right-black no-focus-icon on-hover-arrow-left-red"></i> </div> </div> </a> <a href="/DDF.404" class="normal-large-text icon-container"> <div class="element-list"> <div class="element-list-text"> Defect and Diffusion Forum <br /> <span class="paper-volume-number">Vol. 404</span> </div> <div class="element-list-arrow"> <i class="inline-icon arrow-right-black no-focus-icon on-hover-arrow-left-red"></i> </div> </div> </a> <a href="/DDF.403" class="normal-large-text icon-container"> <div class="element-list"> <div class="element-list-text"> Defect and Diffusion Forum <br /> <span class="paper-volume-number">Vol. 403</span> </div> <div class="element-list-arrow"> <i class="inline-icon arrow-right-black no-focus-icon on-hover-arrow-left-red"></i> </div> </div> </a> <a href="/DDF.402" class="normal-large-text icon-container"> <div class="element-list"> <div class="element-list-text"> Defect and Diffusion Forum <br /> <span class="paper-volume-number">Vol. 402</span> </div> <div class="element-list-arrow"> <i class="inline-icon arrow-right-black no-focus-icon on-hover-arrow-left-red"></i> </div> </div> </a> <a href="/DDF.401" class="normal-large-text icon-container"> <div class="element-list"> <div class="element-list-text"> Defect and Diffusion Forum <br /> <span class="paper-volume-number">Vol. 401</span> </div> <div class="element-list-arrow"> <i class="inline-icon arrow-right-black no-focus-icon on-hover-arrow-left-red"></i> </div> </div> </a> <a href="/DDF.400" class="normal-large-text icon-container"> <div class="element-list"> <div class="element-list-text"> Defect and Diffusion Forum <br /> <span class="paper-volume-number">Vol. 400</span> </div> <div class="element-list-arrow"> <i class="inline-icon arrow-right-black no-focus-icon on-hover-arrow-left-red"></i> </div> </div> </a> </div> </div> <div class="right-content col-md-8 col-sm-7 col-xs-12"> <div class="bread-crumbs hidden-xs"> <a class="bread-crumbs-first" href="/">Home</a><i class="inline-icon arrow-breadcrumbs"></i><a class="bread-crumbs-first" href="/DDF">Defect and Diffusion Forum</a><i class="inline-icon arrow-breadcrumbs"></i><span class="bread-crumbs-second">Defect and Diffusion Forum Vol. 406</span></div> <div class="page-name-block underline-begin"> <h1 class="page-name-block-text">Defect and Diffusion Forum Vol. 406</h1> </div> <div class="clearfix title-details"> <div class="papers-block-info col-lg-12"> <div class="row"> <div class="info-row-name normal-text-gray col-md-2 col-sm-3 col-xs-4"> <div class="row"> <p>DOI:</p> </div> </div> <div class="info-row-content semibold-middle-text col-md-10 col-sm-9 col-xs-8"> <div class="row"> <p><a href="https://doi.org/10.4028/www.scientific.net/DDF.406">https://doi.org/10.4028/www.scientific.net/DDF.406</a></p> </div> </div> </div> </div> <div id="titleMarcXmlLink" style="display: none" class="papers-block-info col-lg-12"> <div class="row"> <div class="info-row-name normal-text-gray col-md-2 col-sm-3 col-xs-4"> <div class="row"> <p>Export:</p> </div> </div> <div class="info-row-content semibold-middle-text col-md-10 col-sm-9 col-xs-8"> <div class="row"> <p><a href="/DDF.406/marc.xml">MARCXML</a></p> </div> </div> </div> </div> <div class="papers-block-info col-lg-12"> <div class="row"> <div class="info-row-name normal-text-gray col-md-2 col-sm-3 col-xs-4"> <div class="row"> <p>ToC:</p> </div> </div> <div class="info-row-content semibold-middle-text col-md-10 col-sm-9 col-xs-8"> <div class="row"> <p><a href="/DDF.406_toc.pdf">Table of Contents</a></p> </div> </div> </div> </div> </div> <div class="volume-tabs"> </div> <div class=""> <div class="volume-papers-page"> <div class="block-search-pagination clearfix"> <div class="block-search-volume"> <input id="paper-search" type="search" placeholder="Search" maxlength="65"> </div> <div class="pagination-container"><ul class="pagination"><li class="active"><span>1</span></li><li><a href="/DDF.406/2">2</a></li><li><a href="/DDF.406/3">3</a></li><li><a href="/DDF.406/4">4</a></li><li><a href="/DDF.406/5">5</a></li><li class="PagedList-skipToNext"><a href="/DDF.406/2" rel="next">></a></li></ul></div> </div> <div class="block-volume-title normal-text-gray"> <p> Paper Title <span>Page</span> </p> </div> <div class="item-block"> <div class="item-link"> <a href="/DDF.406.-5">Preface</a> </div> </div> <div class="item-block"> <div class="item-link"> <a href="/DDF.406.3">Study of Natural Convection Melting of Phase Change Material inside a Rectangular Cavity with Non-Uniformly Heated Wall</a> </div> <div class="item-link volume-authors"> <div class="semibold-middle-text"> Authors: Abdelghani Laouer, Nesrine Boulaktout, El Hacene Mezaache, Salah Laouar </div> </div> <div id="abstractTextBlock558906" class="volume-info volume-info-text volume-info-description"> Abstract: In the present numerical study, the convection diffusion phenomena associated with solid-liquid phase transition processes during phase change material (PCM) melting within a rectangular cavity is studied. The cavity is heated from left wall with a sinusoidal temperature distribution. Initially the enclosure was filled by solid gallium at melting temperature 29.78°C. The enthalpy-based lattice Boltzmann method (LBM) with D2Q9 particle velocity model is used to solve density, velocity and temperature fields. Influence of Rayleigh number ranging from 10<sup>3</sup> to 4×10<sup>5</sup> on streamlines, isotherms and liquid fraction is analyzed. The results indicate that natural convection of liquid phase change material (PCM) plays a significant role in the melting heat transfer of PCM. It is found that the rate of the melting increases with the increase in the values of the Rayleigh number. </div> <div> <a data-readmore="{ block: '#abstractTextBlock558906', lines: 2, expandText: '...more', collapseText: '...less' }"></a> </div> <div class="page-number semibold-large-text"> 3 </div> </div> <div class="item-block"> <div class="item-link"> <a href="/DDF.406.12">Heat Transfer Enhancement of Heat Sources at its Optimum Position in a Square Enclosure with Ventilation Ports</a> </div> <div class="item-link volume-authors"> <div class="semibold-middle-text"> Authors: Fatima Zohra Benouis, Ould Amer Yacine </div> </div> <div id="abstractTextBlock559381" class="volume-info volume-info-text volume-info-description"> Abstract: Forced convection in a ventilated enclosure with aspect ratio 2 is studied. Three heat sources simulating electronic component are placed in the bottom wall of the cavity, all walls are kept insulated. With varying the inlet and the outlet location of cold air firstly then swapping the location of the heat sources, the optimal cooling strategy was identified. Consideration was given to steady two-dimensional laminar flow and Reynolds number (Re) in the range 10–1500<i>.</i> The governing equations along with the boundary conditions are solved by using the control volume method. Calculations showed that enhancement in heat transfer occurred, and the results indicate that there exists an optimal location of ventilation ports and an optimal disposition of heat sources for which the heat transfer is maximized for all ranges of Reynolds numbers. </div> <div> <a data-readmore="{ block: '#abstractTextBlock559381', lines: 2, expandText: '...more', collapseText: '...less' }"></a> </div> <div class="page-number semibold-large-text"> 12 </div> </div> <div class="item-block"> <div class="item-link"> <a href="/DDF.406.25">Forced Convection inside a Vertical Circular Cylinder with an Inner Coaxial Rectangular Cylinder</a> </div> <div class="item-link volume-authors"> <div class="semibold-middle-text"> Authors: Hamad Ahmed Boughezala, Said Bouabdallah, Ali Boukhari </div> </div> <div id="abstractTextBlock562316" class="volume-info volume-info-text volume-info-description"> Abstract: In this work, we performed a numerical simulation of laminar forced convection and, in an annular space inside a vertical circular cylinder with an inner coaxial rectangular cylinder having an aspect ratio (height/radius) γ=2, filled with a liquid metal (Pr = 0.0023). Six annular gaps R =0.9, 0.8, 0.7, 0.6, 0.5 and 0.4 were studied. The governing equations are solved using the ANSYS Fluent code which is based on the finite volume method. SIMPLE algorithm is employed for the pressure-velocity coupled momentum equations. Two cases of the rotating parts of the cylinders are investigated and the effect of Reynolds number on the flow are examined. The obtained results of the forced convection show that the increase of the Reynolds number Re affects straightly on the structure of the flow wherever the velocity field are destabilized and the strongest stabilization of the velocity field occurs when the flow generated by the rotating of the circular cylinder and the rectangular cylinder.Keywords: forced convection, annular gap, circular cylinder, rectangular cylinder, co-rotating. </div> <div> <a data-readmore="{ block: '#abstractTextBlock562316', lines: 2, expandText: '...more', collapseText: '...less' }"></a> </div> <div class="page-number semibold-large-text"> 25 </div> </div> <div class="item-block"> <div class="item-link"> <a href="/DDF.406.36">Effects of Important Parameters on the Transition from Forced to Mixed Convection Flow in a Square Cavity</a> </div> <div class="item-link volume-authors"> <div class="semibold-middle-text"> Authors: Sofiane Boulkroune, Omar Kholai, Brahim Mahfoud </div> </div> <div id="abstractTextBlock558203" class="volume-info volume-info-text volume-info-description"> Abstract: Combined free and forced convection in a square cavity filled with a viscous fluid characterized by a small Prandtl number is studied numerically. The left wall is moving with a constant velocity v and is maintained at a local cold temperature Tc, while the right wall is fixed and maintained at a local hot temperature Th (Tc <Th). The top and bottom walls of the cavity is assumed to be adiabatic. The governing Navier-Stokes, and energy equations along with appropriate boundary conditions are solved using the finite-volume method. The flow and temperature fields are presented by stream function and isotherms, respectively. The effects of important parameters such as Reynolds number, Prandtl number, and Grashof number on the transition from forced convection to mixed convection are investigated. Results indicate that increasing Reynolds number results to fluid acceleration and, thus, to flow transition. Results also show that Grashof and Prandtl's numbers influenced the conditions for the transition to the mixed convection regime. </div> <div> <a data-readmore="{ block: '#abstractTextBlock558203', lines: 2, expandText: '...more', collapseText: '...less' }"></a> </div> <div class="page-number semibold-large-text"> 36 </div> </div> <div class="item-block"> <div class="item-link"> <a href="/DDF.406.53">Conjugate Heat and Mass Transfer on Steady MHD Mixed Convection Flow along a Vertical Slender Hollow Cylinder with Heat Generation and Chemical Reaction Effects</a> </div> <div class="item-link volume-authors"> <div class="semibold-middle-text"> Authors: F. Saidoune, M.N. Bouaziz, A. Aziz </div> </div> <div id="abstractTextBlock556387" class="volume-info volume-info-text volume-info-description"> Abstract: This paper studies the effects of heat generation and chemical reaction on the coupled conjugate heat and mass transfer by MHD laminar mixed convective flow along a vertical slender hollow cylinder. The governing boundary layer equations along with the boundary conditions are first cast into a dimensionless form by a non similar transformation and the resulting equations are then solved by the finite difference method using Matlab<sup>@</sup> following the code bvp4c. Numerical results of the velocity, temperature and concentration for different values of the conjugate heat transfer parameter p, the magnetic parameter M, the heat generation Q, and the chemical reaction K are studied. The local skin friction, Nusselt number and Sherwood number are also analyzed and presented graphically. In the numerical ranges of the main parameters, it is found mainly that working with strong conjugate heat transfer or/and all others parameters affects negatively the Nusselt and Sherwood numbers. The same trend is revealed for the skin friction factor. </div> <div> <a data-readmore="{ block: '#abstractTextBlock556387', lines: 2, expandText: '...more', collapseText: '...less' }"></a> </div> <div class="page-number semibold-large-text"> 53 </div> </div> <div class="item-block"> <div class="item-link"> <a href="/DDF.406.66">Heat Transfer Mode and Effect of Fluid Flow on the Morphology of the Weld Pool</a> </div> <div class="item-link volume-authors"> <div class="semibold-middle-text"> Authors: Abdel Halim Zitouni, Pierre Spitéri, Mouloud Aissani, Younes Benkheda </div> </div> <div id="abstractTextBlock556880" class="volume-info volume-info-text volume-info-description"> Abstract: In this work, the heat transfer by conduction and convection mode and effect of fluid flow on the morphology of the weld pool and the welding properties is investigated during Tungsten Inert Gas (TIG) process. In the first part, a computation code under Fortran was elaborated to solve the equations resulting from the finite difference discretization of the heat equation, taking into account the liquid-solid phase change with the associated boundary conditions. In order to calculate the velocity field during welding, the Navier-Stokes equations in the melt zone were simplified and solved considering their stream-vorticity formulation. A mathematical model was developed to study the effect of the melted liquid movement on the weld pool. The evolution of the fraction volume of the liquid and the thermal fields promoted the determination of the molten zone (MZ) and the Heat Affected Zone (HAT) dimensions, which seems to be in good agreement with literature. </div> <div> <a data-readmore="{ block: '#abstractTextBlock556880', lines: 2, expandText: '...more', collapseText: '...less' }"></a> </div> <div class="page-number semibold-large-text"> 66 </div> </div> <div class="item-block"> <div class="item-link"> <a href="/DDF.406.78">Prandtl and Richardson Number Effects on Mixed Convection in a Vented Enclosure on Application to the Cooling of the Fins</a> </div> <div class="item-link volume-authors"> <div class="semibold-middle-text"> Authors: Mohamed Chaour, Saadoun Boudebous </div> </div> <div id="abstractTextBlock557738" class="volume-info volume-info-text volume-info-description"> Abstract: In the present study, a numerical investigate the transport mechanism of laminar mixed convection in a vented enclosure. The walls of the cavity were kept adiabatic except the right vertical wall which was equipped with three fins dissipating the heat at a constant temperature. The equations of considered phenomenon were established and discretized by the finite difference method. The sweeping method line-by-line and the Thomas Algorithm (TDMA) were used for the resolution of the system of discretized equations. The results obtained showed that both the variations of the Prandtl and Richardson number have important effects on the flow structure and on the heat transfer. </div> <div> <a data-readmore="{ block: '#abstractTextBlock557738', lines: 2, expandText: '...more', collapseText: '...less' }"></a> </div> <div class="page-number semibold-large-text"> 78 </div> </div> <div class="item-block"> <div class="item-link"> <a href="/DDF.406.87">Heat and Mass Transfer in an Inclined Bi-L-Shaped Layered Porous Media: Effect of Buoyancy Ration</a> </div> <div class="item-link volume-authors"> <div class="semibold-middle-text"> Authors: Latreche Abdelkrim, Djezzar Mahfoud </div> </div> <div id="abstractTextBlock558923" class="volume-info volume-info-text volume-info-description"> Abstract: The effect of buoyancy ratio on the two dimensional natural convection heat and mass transfer generated in an inclined square bi-L-shaped layered porous cavity filled with Newtonian fluid has been investigated numerically. Each porous layer is considered isotropic, homogeneous and saturated with the same fluid. The cavity is heated and salted from below where as the vertical walls are assumed to be adiabatic and impermeable. The physical model for the momentum conservation equation makes use of the Darcy-Brinkman-Forcheimer model, and the set of coupled equations is solved using a finite volume approach. The power-law scheme is used to evaluate the flow, heat and mass fluxes across each of the control volume boundaries. Tri diagonal matrix algorithm with under-relaxation is used in conjunction with iterations to solve the nonlinear discretized equations. An in-house code developed for this study is validated using previous studies. The results are presented graphically in terms of streamlines, isotherms and iso-concentrations. In addition, the heat and mass transfer rate in the cavity is measured in terms of the average Nusselt and Sherwood numbers. </div> <div> <a data-readmore="{ block: '#abstractTextBlock558923', lines: 2, expandText: '...more', collapseText: '...less' }"></a> </div> <div class="page-number semibold-large-text"> 87 </div> </div> <div class="item-block"> <div class="item-link"> <a href="/DDF.406.98">Numerical Simulation of Boundary Conditions Effect on Heat Transfer and Entropy Generation in a Square Cavity Filled with Al<sub>2</sub>O<sub>3</sub>-Cu -Water Hybrid Nanofluid</a> </div> <div class="item-link volume-authors"> <div class="semibold-middle-text"> Authors: Ilhem Zeghbid, Rachid Bessaih </div> </div> <div id="abstractTextBlock558892" class="volume-info volume-info-text volume-info-description"> Abstract: A numerical simulation was performed in four geometries with different boundary conditions; two geometries have top walls moving with a constant horizontal velocity U<sub>0</sub> in two opposite directions, while the other geometries have vertical walls moving in two opposite directions with a constant vertical velocity V<sub>0</sub>. These cavities are filled with hybrid nanofluid Al<sub>2</sub>O<sub>3</sub>-Cu/water, and heated by two constant flow heat sources placed on the left vertical wall. The moving wall and the other walls are respectively maintained at a local cold temperature Tc. The interest of this work is to see the effects generated by incorporation of hybrid nanofluids on the mixed convection flow, and to make an analysis of the entropy production in the mixed convection problem in order to be able to choose the geometry with different boundary conditions among the four geometries with different boundary conditions that will ensure energy efficiency. The finite volume method was used to solve the heat transfer flow equations across the physical domain with the SIMPLER algorithm. The influence of relevant parameters such as Richardson and Reynolds numbers and volume fraction of nanoparticles on entropy generation and heat transfer rate were studied. It was found that entropy generation decreases with increasing Richardson number, Reynolds number and that incorporation of a hybrid Al<sub>2</sub>O<sub>3</sub>-Cu/water nanofluid in the base fluid improves the high heat transfer rate. </div> <div> <a data-readmore="{ block: '#abstractTextBlock558892', lines: 2, expandText: '...more', collapseText: '...less' }"></a> </div> <div class="page-number semibold-large-text"> 98 </div> </div> <div class="block-bottom-pagination"> <div class="pager-info"> <p>Showing 1 to 10 of 49 Paper Titles</p> </div> <div class="pagination-container"><ul class="pagination"><li class="active"><span>1</span></li><li><a href="/DDF.406/2">2</a></li><li><a href="/DDF.406/3">3</a></li><li><a href="/DDF.406/4">4</a></li><li><a href="/DDF.406/5">5</a></li><li class="PagedList-skipToNext"><a href="/DDF.406/2" rel="next">></a></li></ul></div> </div> </div> </div> </div> </div> </div> </div> <div class="social-icon-popup"> <a href="https://www.facebook.com/Scientific.Net.Ltd/" target="_blank" rel="noopener" title="Scientific.Net"><i class="inline-icon facebook-popup-icon social-icon"></i></a> <a href="https://twitter.com/Scientific_Net/" target="_blank" rel="noopener" title="Scientific.Net"><i class="inline-icon twitter-popup-icon social-icon"></i></a> <a href="https://www.linkedin.com/company/scientificnet/" target="_blank" rel="noopener" title="Scientific.Net"><i class="inline-icon linkedin-popup-icon social-icon"></i></a> </div> </div> <div class="sc-footer"> <div class="footer-fluid"> <div class="container"> <div class="row"> <div class="footer-menu col-md-12 col-sm-12 col-xs-12"> <ul class="list-inline menu-font"> <li><a href="/ForLibraries">For Libraries</a></li> <li><a href="/ForPublication/Paper">For Publication</a></li> <li><a href="/insights" target="_blank">Insights</a></li> <li><a href="/DocuCenter">Downloads</a></li> <li><a href="/Home/AboutUs">About Us</a></li> <li><a href="/PolicyAndEthics/PublishingPolicies">Policy & Ethics</a></li> <li><a href="/Home/Contacts">Contact Us</a></li> <li><a href="/Home/Imprint">Imprint</a></li> <li><a href="/Home/PrivacyPolicy">Privacy Policy</a></li> <li><a href="/Home/Sitemap">Sitemap</a></li> <li><a href="/Conferences">All Conferences</a></li> <li><a href="/special-issues">All Special Issues</a></li> <li><a href="/news/all">All News</a></li> <li><a href="/read-and-publish-agreements">Read & Publish Agreements</a></li> </ul> </div> </div> </div> </div> <div class="line-footer"></div> <div class="footer-fluid"> <div class="container"> <div class="row"> <div class="col-xs-12"> <a href="https://www.facebook.com/Scientific.Net.Ltd/" target="_blank" rel="noopener" title="Scientific.Net"><i class="inline-icon facebook-footer-icon social-icon"></i></a> <a href="https://twitter.com/Scientific_Net/" target="_blank" rel="noopener" title="Scientific.Net"><i class="inline-icon twitter-footer-icon social-icon"></i></a> <a href="https://www.linkedin.com/company/scientificnet/" target="_blank" rel="noopener" title="Scientific.Net"><i class="inline-icon linkedin-footer-icon social-icon"></i></a> </div> </div> </div> </div> <div class="line-footer"></div> <div class="footer-fluid"> <div class="container"> <div class="row"> <div class="col-xs-12 footer-copyright"> <p> © 2024 Trans Tech Publications Ltd. All rights are reserved, including those for text and data mining, AI training, and similar technologies. For open access content, terms of the Creative Commons licensing CC-BY are applied. <br />Scientific.Net is a registered trademark of Trans Tech Publications Ltd. </p> </div> </div> </div> </div> </div> <a class="scrollTop inline-icon scroll-top-icon" href="#" style="display: none"></a> </div> <script src="/Scripts/public.min.js?v=BtSq2PJEHRTW2PekpQGgIQKs7-OSPiKhsoI9rMs6kTU"></script> <script> $(function () { $("#paper-search").autocomplete({ minLength: 1, source: '/Title/Search?kurzel=DDF&volumeBegin=406&volumeEnd=406', delay: 200, select: function (event, ui) { window.location.href = ui.item.url; } }); }); </script> <script asp-render-component-scripts> $(function () { $.get("/Title/ShowMarcXmlLink") .done(function (showMarcXmlLink) { if (showMarcXmlLink) { $("#titleMarcXmlLink").show(); } }); }); Scinet.public = (function () { function loadCartInfo(onLoad) { var formatCartItemCount = function (count) { var format = (count > 1 || count === 0) ? "{0} items" : "{0} item"; $("#cartInfoTotalItemsCount").html(Scinet.stringFormat(format, count)); }, cookieCartItemCount = Cookies.get("Scinet5.CartItemsCount"); if (onLoad && cookieCartItemCount != null) { formatCartItemCount(parseInt(cookieCartItemCount, 10)); } else { $.ajax({ url: "/Cart/GetItemsCount", cache: false }) .done( function (count) { Cookies.set("Scinet5.CartItemsCount", count, { domain: ".scientific.net", secure: true }); formatCartItemCount(count); }); } } return { loadCartInfo: loadCartInfo }; })(); $(function () { Scinet.public.loadCartInfo(true); $("[data-add-book-to-cart]").on("click", function (e) { e.preventDefault(); var data = $(this).data("add-book-to-cart"); console.log(data); var url = "/Cart/AddBook"; $.post(url, data) .done( function () { Scinet.public.loadCartInfo(); $("#addToCart").modal(); }) .fail( function (xhr) { Scinet.error(xhr.responseText); }); }) }); </script> <script> var $buoop = { required: { e: 11, f: -6, o: -6, s: -3, c: -6 }, insecure: false, unsupported: false, api: 2019.11, reminder: 0, onshow: function () { window.browserUpdateOutdated = true; } }; function $buo_f() { var e = document.createElement("script"); e.src = "//browser-update.org/update.min.js"; document.body.appendChild(e); }; try { document.addEventListener("DOMContentLoaded", $buo_f, false) } catch (e) { window.attachEvent("onload", $buo_f) } </script>   <script> window.clientErrorLogActionUrl = "/Errors/LogClientError"; </script> </body> </html>

CINXE.COM

Defect and Diffusion Forum Vol. 406 | Scientific.Net