dc.contributor.author | Yapici, Kerim | |
dc.contributor.author | Obut, Salih | |
dc.date.accessioned | 2019-07-27T12:10:23Z | |
dc.date.accessioned | 2019-07-28T09:56:30Z | |
dc.date.available | 2019-07-27T12:10:23Z | |
dc.date.available | 2019-07-28T09:56:30Z | |
dc.date.issued | 2015 | |
dc.identifier.issn | 0961-5539 | |
dc.identifier.issn | 1758-6585 | |
dc.identifier.uri | https://dx.doi.org/10.1108/HFF-02-2014-0036 | |
dc.identifier.uri | https://hdl.handle.net/20.500.12418/8036 | |
dc.description | WOS: 000357389400003 | en_US |
dc.description.abstract | Purpose - The purpose of this paper is to numerically investigate steady, laminar natural and mixed convection heat transfer in a two-dimensional cavity by using a finite volume method with a fourth-order approximation of convective terms, with and without the presence of nanoparticles. Highly accurate benchmark results are also provided. Design/methodology/approach - A finite volume method on a non-uniform staggered grid is used for the solution of two-dimensional momentum and energy conservation equations. Diffusion terms, in the momentum and energy equations, are approximated using second-order central differences, whereas a non-uniform four-point fourth-order interpolation (FPFOI) scheme is developed for the convective terms. Coupled mass and momentum conservation equations are solved iteratively using a semi-implicit method for pressure-linked equation method. Findings - For the case of natural convection problem at high-Rayleigh numbers, grid density must be sufficiently high in order to obtain grid-independent results and capture reality of the physics. Heat transfer enhancement for natural convection is observed up to a certain value of the nanoparticle volume fraction. After that value, heat transfer deterioration is found with increasing nanoparticle volume fraction. Originality/value - Developed a non-uniform FPFOI scheme. Highly accurate benchmark results for the heat transfer of Al2O3-water nanofluid in a cavity are provided. | en_US |
dc.language.iso | eng | en_US |
dc.publisher | EMERALD GROUP PUBLISHING LTD | en_US |
dc.relation.isversionof | 10.1108/HFF-02-2014-0036 | en_US |
dc.rights | info:eu-repo/semantics/closedAccess | en_US |
dc.subject | Nanofluid | en_US |
dc.subject | Finite volume method | en_US |
dc.subject | Fourth-order linear scheme | en_US |
dc.subject | Lid-driven cavity | en_US |
dc.subject | Natural and mixed convection | en_US |
dc.subject | Non-uniform grid | en_US |
dc.title | Benchmark results for natural and mixed convection heat transfer in a cavity | en_US |
dc.type | article | en_US |
dc.relation.journal | INTERNATIONAL JOURNAL OF NUMERICAL METHODS FOR HEAT & FLUID FLOW | en_US |
dc.contributor.department | [Yapici, Kerim] Cumhuriyet Univ, Dept Nanotechnol Engn, Sivas, Turkey -- [Obut, Salih] TUBITAK Marmara Res Ctr, Energy Inst, Kocaeli, Turkey | en_US |
dc.contributor.authorID | Obut, Salih -- 0000-0002-9833-8151 | en_US |
dc.identifier.volume | 25 | en_US |
dc.identifier.issue | 5 | en_US |
dc.identifier.endpage | 1029 | en_US |
dc.identifier.startpage | 998 | en_US |
dc.relation.publicationcategory | Makale - Uluslararası Hakemli Dergi - Kurum Öğretim Elemanı | en_US |