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hal.structure.identifierInstitut de Mathématiques de Bordeaux [IMB]
dc.contributor.authorBRULL, Stéphane
hal.structure.identifierInstitut de Mathématiques de Bordeaux [IMB]
dc.contributor.authorMIEUSSENS, Luc
dc.date.created2014-01-27
dc.date.issued2014
dc.identifier.issn0021-9991
dc.description.abstractEnMost of numerical methods for deterministic simulations of rarefied gas flows use the discrete velocity (or discrete ordinate) approximation. In this approach, the kinetic equation is approximated with a global velocity grid. The grid must be large and fine enough to capture all the distribution functions, which is very expensive for high speed flows (like in hypersonic aerodynamics). In this article, we propose to use instead different velocity grids that are local in time and space: these grids dynamically adapt to the width of the distribution functions. The advantages and drawbacks of the method are illustrated in several 1D test cases.
dc.language.isoen
dc.publisherElsevier
dc.subject.enkinetic equations
dc.subject.endiscrete velocity model
dc.subject.endeterministic method
dc.subject.enrarefied gas dynamics
dc.title.enLocal discrete velocity grids for deterministic rarefied flow simulations
dc.typeArticle de revue
dc.identifier.doi10.1016/j.jcp.2014.01.050
dc.subject.halMathématiques [math]/Analyse numérique [math.NA]
dc.identifier.arxiv1304.1776
bordeaux.journalJournal of Computational Physics
bordeaux.page22-46
bordeaux.volume266
bordeaux.issue1
bordeaux.peerReviewedoui
hal.identifierhal-00808613
hal.version1
hal.popularnon
hal.audienceInternationale
hal.origin.linkhttps://hal.archives-ouvertes.fr//hal-00808613v1
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