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A second order cartesian scheme for BGK equation

hal.structure.identifierPolitecnico di Torino = Polytechnic of Turin [Polito]
hal.structure.identifierInstitut de Mathématiques de Bordeaux [IMB]
hal.structure.identifierModélisation, contrôle et calcul [MC2]
dc.contributor.authorBERNARD, Florian
hal.structure.identifierInstitut de Mathématiques de Bordeaux [IMB]
hal.structure.identifierModélisation, contrôle et calcul [MC2]
dc.contributor.authorIOLLO, Angelo
hal.structure.identifierUniversitá degli Studi dell’Insubria = University of Insubria [Varese] [Uninsubria]
dc.contributor.authorPUPPO, Gabriella
dc.date.conference2013-09-02
dc.description.abstractEnA simple second order scheme is presented for BGK equation on cartesian grids to simulate rarefied gas flows. An immersed boundary technique is then used since the mesh is body fitted. The asymptotic preserving properties of the BGK equation discretization towards Euler limit are also investigated with emphasis on the boundary conditions as the Knudsen number goes to zero. Reconstruction techniques and levelset functions are used to modify the fluxes at the nearest interface of the body and enforce the boundary conditions at second order. The same method is applied in 1D and 2D cases to demonstrate its accuracy
dc.language.isoen
dc.subject.enBGK model
dc.subject.encartesian meshes
dc.subject.ensecond order
dc.title.enA second order cartesian scheme for BGK equation
dc.typeCommunication dans un congrès
dc.subject.halMathématiques [math]/Analyse numérique [math.NA]
dc.subject.halPhysique [physics]/Mécanique [physics]
dc.subject.halSciences de l'ingénieur [physics]
bordeaux.conference.title2nd ECCOMAS Young Investigators Conference (YIC 2013)
bordeaux.countryFR
bordeaux.conference.cityBordeaux
bordeaux.peerReviewedoui
hal.identifierhal-00855885
hal.version1
hal.invitednon
hal.proceedingsnon
hal.conference.end2013-09-06
hal.popularnon
hal.audienceInternationale
hal.origin.linkhttps://hal.archives-ouvertes.fr//hal-00855885v1
bordeaux.COinSctx_ver=Z39.88-2004&rft_val_fmt=info:ofi/fmt:kev:mtx:journal&rft.au=BERNARD,%20Florian&IOLLO,%20Angelo&PUPPO,%20Gabriella&rft.genre=unknown


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