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Locally refined discrete velocity grids for stationary rarefied flow simulations

hal.structure.identifierCentre d'études scientifiques et techniques d'Aquitaine (CESTA-CEA) [CESTA]
dc.contributor.authorBARANGER, Céline
hal.structure.identifierCentre d'études scientifiques et techniques d'Aquitaine (CESTA-CEA) [CESTA]
dc.contributor.authorCLAUDEL, Jean
hal.structure.identifierInstitut de Mathématiques de Bordeaux [IMB]
dc.contributor.authorHÉROUARD, Nicolas
hal.structure.identifierInstitut de Mathématiques de Bordeaux [IMB]
dc.contributor.authorMIEUSSENS, Luc
dc.date.created2013-04-19
dc.date.issued2014
dc.identifier.issn0021-9991
dc.description.abstractEnMost of deterministic solvers for rarefied gas dynamics use discrete velocity (or discrete ordinate) approximations of the distribution function on a Cartesian grid. This grid must be sufficiently large and fine to describe the distribution functions at every space position in the computational domain. For 3-dimensional hypersonic flows, like in re-entry problems, this induces much too dense velocity grids that cannot be practically used, for memory storage requirements. In this article, we present an approach to generate automatically a locally refined velocity grid adapted to a given simulation. This grid contains much less points than a standard Cartesian grid and allows us to make realistic 3-dimensional simulations at a reduced cost, with a comparable accuracy.
dc.language.isoen
dc.publisherElsevier
dc.subject.enrarefied flow simulation
dc.subject.enhypersonic flows
dc.subject.enre-entry problem
dc.subject.entransition regime
dc.subject.enBGK model
dc.subject.endiscrete velocity model
dc.title.enLocally refined discrete velocity grids for stationary rarefied flow simulations
dc.typeArticle de revue
dc.identifier.doi10.1016/j.jcp.2013.10.014
dc.subject.halMathématiques [math]/Analyse numérique [math.NA]
dc.identifier.arxiv1304.5611
bordeaux.journalJournal of Computational Physics
bordeaux.page572-593
bordeaux.volume257
bordeaux.issue15
bordeaux.peerReviewedoui
hal.identifierhal-00815967
hal.version1
hal.popularnon
hal.audienceInternationale
hal.origin.linkhttps://hal.archives-ouvertes.fr//hal-00815967v1
bordeaux.COinSctx_ver=Z39.88-2004&rft_val_fmt=info:ofi/fmt:kev:mtx:journal&rft.jtitle=Journal%20of%20Computational%20Physics&rft.date=2014&rft.volume=257&rft.issue=15&rft.spage=572-593&rft.epage=572-593&rft.eissn=0021-9991&rft.issn=0021-9991&rft.au=BARANGER,%20C%C3%A9line&CLAUDEL,%20Jean&H%C3%89ROUARD,%20Nicolas&MIEUSSENS,%20Luc&rft.genre=article


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