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A BGK model for high temperature rarefied gas flows

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.authorDAUVOIS, Yann
hal.structure.identifierCentre d'études scientifiques et techniques d'Aquitaine (CESTA-CEA) [CESTA]
dc.contributor.authorMAROIS, Gentien
hal.structure.identifierCentre d'études scientifiques et techniques d'Aquitaine (CESTA-CEA) [CESTA]
dc.contributor.authorMATHÉ, Jordane
hal.structure.identifierCentre d'études scientifiques et techniques d'Aquitaine (CESTA-CEA) [CESTA]
dc.contributor.authorMATHIAUD, Julien
hal.structure.identifierInstitut de Mathématiques de Bordeaux [IMB]
dc.contributor.authorMIEUSSENS, Luc
dc.date.accessioned2024-04-04T02:55:29Z
dc.date.available2024-04-04T02:55:29Z
dc.date.issued2020-03
dc.identifier.issn0997-7546
dc.identifier.urihttps://oskar-bordeaux.fr/handle/20.500.12278/192367
dc.description.abstractEnHigh temperature gases, for instance in hypersonic reentry flows, show complex phenomena like excitation of rotational and vibrational energy modes, and even chemical reactions. For flows in the continuous regime, simulation codes use analytic or tabulated constitutive laws for pressure and temperature. In this paper, we propose a BGK model which is consistent with any arbitrary constitutive laws, and which is designed to make high temperature gas flow simulations in the rarefied regime. A Chapman-Enskog analysis gives the corresponding transport coefficients. Our approach is illustrated by a numerical comparison with a compressible Navier-Stokes solver with rotational and vibrational non equilibrium. The BGK approach gives a deterministic solver with a computational cost which is close to that of a simple monoatomic gas.
dc.language.isoen
dc.publisherElsevier
dc.subject.enpolyatomic gas
dc.subject.enBGK model
dc.subject.ensecond principle
dc.subject.enreal gas effect
dc.subject.enrarefied gas dynamics
dc.title.enA BGK model for high temperature rarefied gas flows
dc.typeArticle de revue
dc.identifier.doi10.1016/j.euromechflu.2019.11.006
dc.subject.halPhysique [physics]/Mécanique [physics]/Mécanique des fluides [physics.class-ph]
dc.identifier.arxiv1803.02617
bordeaux.journalEuropean Journal of Mechanics - B/Fluids
bordeaux.page1-12
bordeaux.volume80
bordeaux.hal.laboratoriesInstitut de Mathématiques de Bordeaux (IMB) - UMR 5251*
bordeaux.institutionUniversité de Bordeaux
bordeaux.institutionBordeaux INP
bordeaux.institutionCNRS
bordeaux.peerReviewedoui
hal.identifierhal-01722873
hal.version1
hal.popularnon
hal.audienceInternationale
hal.origin.linkhttps://hal.archives-ouvertes.fr//hal-01722873v1
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