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hal.structure.identifierLaboratoire de Modélisation et Simulation Multi Echelle [MSME]
dc.contributor.authorNICOLAS, Xavier
hal.structure.identifierService de Thermo-hydraulique et de Mécanique des Fluides [STMF]
dc.contributor.authorGOUNAND, S.
hal.structure.identifierInstitut universitaire des systèmes thermiques industriels [IUSTI]
dc.contributor.authorMÉDALE, M.
hal.structure.identifierInstitut de Mécanique et d'Ingénierie de Bordeaux [I2M]
dc.contributor.authorGLOCKNER, Stéphane
dc.date.accessioned2021-05-14T10:04:42Z
dc.date.available2021-05-14T10:04:42Z
dc.date.issued2011-10-28
dc.identifier.issn1040-7790
dc.identifier.urihttps://oskar-bordeaux.fr/handle/20.500.12278/78510
dc.description.abstractEnAbstract A reference solution to a benchmark problem for a 3D mixed convection flow in a horizontal rectangular channel differentially heated (Poiseuille-Rayleigh-Bénard flow) has been proposed in "Part 1: reference solution" of the present paper [Num. Heat Trans. A, vol.?, pp.?-? (2011)]. Since mixed Dirichlet and Neumann thermal boundary conditions are used on the horizontal walls of the channel, a temperature gradient discontinuity is generated. The aim of this paper is to analyze the consequences of this singularity on Richardson extrapolation (RE) of the numerical solutions. The convergence orders of the used numerical methods (finite difference, finite volume, finite element), observed from RE of local and integral quantities are discussed with an emphasis on singularity influence. With the grids used, it is shown that RE can increase the accuracy of the discrete solutions, preferentially with the discretization methods of low space accuracy order, but only in some part of the channel and for a restricted range of the extrapolation coefficient. A correction to the Taylor expansion involved in the RE formalism is proposed to take into account the singularity and to explain the majority of the RE behaviors observed.
dc.language.isoen
dc.publisherTaylor & Francis
dc.subject.enRichardson extrapolation
dc.subject.ensingularity
dc.subject.enboundary conditions
dc.subject.enconvergence order
dc.subject.enBenchmark
dc.subject.enmixed convection
dc.subject.enPoiseuille-Rayleigh-Bénard
dc.subject.enreference solution
dc.title.enBenchmark Solution for a Three-Dimensional Mixed-Convection Flow, Part 2: Analysis of Richardson Extrapolation in the Presence of a Singularity
dc.typeArticle de revue
dc.subject.halInformatique [cs]/Analyse numérique [cs.NA]
dc.subject.halInformatique [cs]/Modélisation et simulation
dc.subject.halPhysique [physics]/Mécanique [physics]/Mécanique des fluides [physics.class-ph]
dc.subject.halSciences de l'ingénieur [physics]/Mécanique [physics.med-ph]/Mécanique des fluides [physics.class-ph]
dc.subject.halPhysique [physics]/Mécanique [physics]/Thermique [physics.class-ph]
dc.subject.halSciences de l'ingénieur [physics]/Mécanique [physics.med-ph]/Thermique [physics.class-ph]
bordeaux.journalNumerical Heat Transfer, Part B Fundamentals
bordeaux.page346-369
bordeaux.volume60
bordeaux.hal.laboratoriesInstitut de Mécanique et d’Ingénierie de Bordeaux (I2M) - UMR 5295*
bordeaux.issue5
bordeaux.institutionUniversité de Bordeaux
bordeaux.institutionBordeaux INP
bordeaux.institutionCNRS
bordeaux.institutionINRAE
bordeaux.institutionArts et Métiers
bordeaux.peerReviewedoui
hal.identifierhal-00692094
hal.version1
hal.origin.linkhttps://hal.archives-ouvertes.fr//hal-00692094v1
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