Lattice Boltzmann Modelling of Natural Convection Problems in a Cavity with a Different Wall Temperature

dc.authoridhttps://orcid.org/0000-0001-8595-6092
dc.authoridhttps://orcid.org/0000-0001-9354-1671
dc.contributor.authorAslan, Erman
dc.contributor.authorYalçın, Özlem
dc.date.accessioned2025-07-08T13:00:01Z
dc.date.available2025-07-08T13:00:01Z
dc.date.issued2025
dc.departmentMühendislik ve Mimarlık Fakültesi
dc.description.abstractIn this study, the cyclic natural convection problem in a square enclosure is modeled using the Lattice Boltzmann Method (LBM) under laminar flow conditions. Four different combinations of boundary conditions are employed to create cases. These cases are denoted as HHHC (Horizontal Hot Horizontal Cold), HHVC (Horizontal Hot Vertical Cold), VHHC (Vertical Hot Horizontal Cold), and VHVC (Vertical Hot Vertical Cold). Four Rayleigh numbers have been utilized to represent laminar flow conditions, namely 𝑅𝑅𝑅𝑅=104 , 105 , 106 , and 107 . For validation purposes, the wellvalidated finite volume method-based commercial code Ansys-Fluent is employed. In the VHVC model and at the highest Rayleigh number, the results obtained with LBM were compared to and validated against the results obtained with the finite volume method. Nusselt numbers are compared for the four cases based on Rayleigh numbers, and the case with highest heat transfer identified. Cases of HHHC and VHVC have produced the lowest and highest Nusselt number, respectively.
dc.identifier.citationAslan, E., & Yalçın, Ö. (2025). Lattice Boltzmann Modelling of Natural Convection Problems in a Cavity with a Different Wall Temperature. Sakarya University Journal of Science, 29(2), 151-159. https://doi.org/10.16984/saufenbilder.1615457
dc.identifier.doihttps://doi.org/10.16984/saufenbilder.1615457
dc.identifier.endpage159
dc.identifier.issn2147-835X
dc.identifier.issue2
dc.identifier.scopusqualityQ3
dc.identifier.startpage151
dc.identifier.urihttps://hdl.handle.net/11363/10064
dc.identifier.volume29
dc.indekslendigikaynakScopus
dc.institutionauthorYalçın, Özlem
dc.institutionauthoridhttps://orcid.org/0000-0001-9354-1671
dc.language.isoen
dc.publisherSakarya University
dc.relation.ispartofSakarya University Journal of Science
dc.relation.publicationcategoryMakale - Uluslararası Hakemli Dergi - Kurum Öğretim Elemanı
dc.rightsinfo:eu-repo/semantics/openAccess
dc.subjectLattice Boltzmann Method
dc.subjectNatural convection
dc.subjectComputational fluid dynamics
dc.subjectLaminar flow
dc.subjectNusselt number
dc.titleLattice Boltzmann Modelling of Natural Convection Problems in a Cavity with a Different Wall Temperature
dc.typeArticle

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