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A Local Velocity Grid Approach for BGK Equation

hal.structure.identifierPolitecnico di Torino = Polytechnic of Turin [Polito]
hal.structure.identifierModeling Enablers for Multi-PHysics and InteractionS [MEMPHIS]
hal.structure.identifierInstitut de Mathématiques de Bordeaux [IMB]
dc.contributor.authorBERNARD, Florian
hal.structure.identifierModeling Enablers for Multi-PHysics and InteractionS [MEMPHIS]
hal.structure.identifierInstitut de Mathématiques de Bordeaux [IMB]
dc.contributor.authorIOLLO, Angelo
hal.structure.identifierUniversitá degli Studi dell’Insubria = University of Insubria [Varese] [Uninsubria]
dc.contributor.authorPUPPO, Gabriella
dc.date.accessioned2024-04-04T03:13:47Z
dc.date.available2024-04-04T03:13:47Z
dc.date.issued2014
dc.identifier.issn1815-2406
dc.identifier.urihttps://oskar-bordeaux.fr/handle/20.500.12278/193981
dc.description.abstractEnThe solution of complex rarefied flows with the BGK equation and the Discrete Velocity Method (DVM) requires a large number of velocity grid points leading to significant computational costs. We propose an adaptive velocity grid approach exploiting the fact that locally in space, the distribution function is supported only by a subset of the global velocity grid. The velocity grid is adapted thanks to criteria based on local temperature, velocity and on the enforcement of mass conservation. Simulations in 1D and 2D are presented for different Knudsen numbers and compared to a global velocity grid BGK solution, showing the computational gain of the proposed approach.
dc.language.isoen
dc.publisherGlobal Science Press
dc.subject.enkinetic models
dc.subject.enBGK model
dc.subject.enDiscrete Velocity Method
dc.title.enA Local Velocity Grid Approach for BGK Equation
dc.typeArticle de revue
dc.identifier.doi10.4208/cicp.291013.240314a
dc.subject.halInformatique [cs]/Modélisation et simulation
bordeaux.journalCommunications in Computational Physics
bordeaux.page956 - 982
bordeaux.volume16
bordeaux.hal.laboratoriesInstitut de Mathématiques de Bordeaux (IMB) - UMR 5251*
bordeaux.institutionUniversité de Bordeaux
bordeaux.institutionBordeaux INP
bordeaux.institutionCNRS
bordeaux.peerReviewedoui
hal.identifierhal-01377856
hal.version1
hal.popularnon
hal.audienceInternationale
hal.origin.linkhttps://hal.archives-ouvertes.fr//hal-01377856v1
bordeaux.COinSctx_ver=Z39.88-2004&rft_val_fmt=info:ofi/fmt:kev:mtx:journal&rft.jtitle=Communications%20in%20Computational%20Physics&rft.date=2014&rft.volume=16&rft.spage=956%20-%20982&rft.epage=956%20-%20982&rft.eissn=1815-2406&rft.issn=1815-2406&rft.au=BERNARD,%20Florian&IOLLO,%20Angelo&PUPPO,%20Gabriella&rft.genre=article


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