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hal.structure.identifierLaboratoire de Modélisation et Simulation Multi Echelle [MSME]
dc.contributor.authorNICOLAS, Xavier
hal.structure.identifierInstitut universitaire des systèmes thermiques industriels [IUSTI]
dc.contributor.authorMÉDALE, M.
hal.structure.identifierService de Thermo-hydraulique et de Mécanique des Fluides [STMF]
dc.contributor.authorGOUNAND, S.
hal.structure.identifierInstitut de Mécanique et d'Ingénierie de Bordeaux [I2M]
dc.contributor.authorGLOCKNER, Stéphane
dc.date.accessioned2021-05-14T10:04:41Z
dc.date.available2021-05-14T10:04:41Z
dc.date.created2011
dc.date.issued2011
dc.identifier.urihttps://oskar-bordeaux.fr/handle/20.500.12278/78508
dc.descriptionDetailed technical report
dc.description.abstractEnA solution to a benchmark problem for a three-dimensional mixed convection flow in a horizontal rectangular channel heated from below and cooled from above (Poiseuille-Rayleigh-Bénard flow) is proposed. This flow is a steady thermoconvective longitudinal roll flow in a large aspect ratio channel at moderate Reynolds and Rayleigh numbers (Re=50, Ra=5000) and Prandtl number Pr=0.7. The model is based on the Navier-Stokes equations with Boussinesq approximation. We propose a reference solution resulting from computations on large grids, Richardson extrapolation (RE) and cubic spline interpolations. The solutions obtained with finite difference, finite volume and finite element codes are in good agreement and reference values for the flow fields and the heat and momentum fluxes are given up to 4 to 5 significant digits. Some difficulties in the use of RE are highlighted due to the use of mixed Dirichlet and Neumann thermal boundary conditions on the same wall. The observed convergence orders of the numerical methods with RE are then discussed from the viewpoint of this singularity. 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. The results of the present study are published in two papers in Numerical Heat Transfer, Part B [1, 2].
dc.language.isoen
dc.subject.enasymptotic convergence
dc.subject.ensecond order
dc.subject.enthird order
dc.subject.enreference solution
dc.subject.enconvergence order
dc.subject.enFinite elements
dc.subject.enFinite volumes
dc.subject.enBenchmark
dc.subject.enboundary conditions
dc.subject.enRichardson extrapolation
dc.subject.ensingularity
dc.subject.enmixed convection
dc.subject.enPoiseuille flow
dc.subject.enRayleigh-Bénard
dc.subject.enPoiseuille-Rayleigh-Bénard
dc.subject.enFinite differences
dc.title.enBenchmark solution for a three-dimensional mixed convection flow - Detailed technical report
dc.typeAutre document
dc.subject.halMathématiques [math]/Analyse numérique [math.NA]
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.halSciences de l'ingénieur [physics]/Mécanique [physics.med-ph]/Thermique [physics.class-ph]
dc.subject.halPhysique [physics]/Mécanique [physics]/Thermique [physics.class-ph]
dc.subject.halInformatique [cs]/Modélisation et simulation
bordeaux.hal.laboratoriesInstitut de Mécanique et d’Ingénierie de Bordeaux (I2M) - UMR 5295*
bordeaux.institutionUniversité de Bordeaux
bordeaux.institutionBordeaux INP
bordeaux.institutionCNRS
bordeaux.institutionINRAE
bordeaux.institutionArts et Métiers
bordeaux.type.institutionSociété Française de Thermique
hal.identifierhal-00695433
hal.version1
hal.origin.linkhttps://hal.archives-ouvertes.fr//hal-00695433v1
bordeaux.COinSctx_ver=Z39.88-2004&rft_val_fmt=info:ofi/fmt:kev:mtx:journal&rft.date=2011&rft.au=NICOLAS,%20Xavier&M%C3%89DALE,%20M.&GOUNAND,%20S.&GLOCKNER,%20St%C3%A9phane&rft.genre=unknown


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