Application of a parallel solver to the LES modelling of turbulent buoyant flows with heat transfer

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dc.authoridSaygin, Hasan/0000-0003-2479-7635
dc.contributor.authorYilmaz, Ilyas
dc.contributor.authorSaygin, Hasan
dc.contributor.authorDavidson, Lars
dc.date.accessioned2024-07-18T20:49:07Z
dc.date.available2024-07-18T20:49:07Z
dc.date.issued2018
dc.departmentİstanbul Bilgi Üniversitesien_US
dc.description.abstractAn existing fully implicit, non-dissipative direct numerical simulation (DNS) algorithm is reformulated to utilise the sub-grid scale (SGS) models in large eddy simulation (LES). The Favre-filtered equations with low-Mach number scaling are derived. The wall-adapting local eddy-viscosity (WALE) is used as SGS model. A fully parallel, finite volume solver is developed based on the resulting LES algorithm using PETSc library and applied to buoyancy-and thermally-driven transitional/turbulent flows in Rayleigh-Taylor instability and turbulent Rayleigh-Benard convection. Results verify that the proposed low-Mach number LES approach, which is physically more accurate than pure incompressible methods for flows with variable properties, perfectly captures the evolution and complex physics of turbulent buoyant flows with or without heat transfer by taking the effects of density and viscosity changes into account without the Oberbeck-Boussinesq (OB) assumption even at large temperature differences with uniform accuracy and efficiency.en_US
dc.description.sponsorshipScientific and Technological Research Council of Turkey (TUBITAK); Istanbul Aydin University [BAP2014-04]en_US
dc.description.sponsorshipIY thanks to The Scientific and Technological Research Council of Turkey (TUBITAK) for supporting his research stay in Sweden during some period of this study. The computing resources provided by Istanbul Aydin University under the project number BAP2014-04 are gratefully acknowledged.en_US
dc.identifier.doi10.1504/PCFD.2018.090338
dc.identifier.endpage107en_US
dc.identifier.issn1468-4349
dc.identifier.issn1741-5233
dc.identifier.issue2en_US
dc.identifier.scopus2-s2.0-85043780987en_US
dc.identifier.scopusqualityQ4en_US
dc.identifier.startpage89en_US
dc.identifier.urihttps://doi.org/10.1504/PCFD.2018.090338
dc.identifier.urihttps://hdl.handle.net/11411/8089
dc.identifier.volume18en_US
dc.identifier.wosWOS:000427453400002en_US
dc.identifier.wosqualityQ4en_US
dc.indekslendigikaynakWeb of Scienceen_US
dc.indekslendigikaynakScopusen_US
dc.language.isoenen_US
dc.publisherInderscience Enterprises Ltden_US
dc.relation.ispartofProgress in Computational Fluid Dynamicsen_US
dc.relation.publicationcategoryMakale - Uluslararası Hakemli Dergi - Kurum Öğretim Elemanıen_US
dc.rightsinfo:eu-repo/semantics/closedAccessen_US
dc.subjectLarge Eddy Simulationen_US
dc.subjectLesen_US
dc.subjectLow-Machen_US
dc.subjectVariable-Densityen_US
dc.subjectWall-Adapting Local Eddy-Viscosityen_US
dc.subjectWaleen_US
dc.subjectRayleigh-Benard Convectionen_US
dc.subjectRbcen_US
dc.subjectRayleigh-Taylor İnstabilityen_US
dc.subjectRtıen_US
dc.subjectRayleigh-Taylor Instabilityen_US
dc.subjectDirect Numerical-Simulationen_US
dc.subjectLarge-Eddy Simulationen_US
dc.subjectBenard Convectionen_US
dc.subjectThermal-Convectionen_US
dc.subjectResolutionen_US
dc.subjectAlgorithmen_US
dc.subjectTransitionen_US
dc.subjectDnsen_US
dc.titleApplication of a parallel solver to the LES modelling of turbulent buoyant flows with heat transfer
dc.typeArticle

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