BGK Polyatomic Model for Rarefied Flows
IOLLO, Angelo
Institut de Mathématiques de Bordeaux [IMB]
Modeling Enablers for Multi-PHysics and InteractionS [MEMPHIS]
Institut de Mathématiques de Bordeaux [IMB]
Modeling Enablers for Multi-PHysics and InteractionS [MEMPHIS]
PUPPO, Gabriella
Universitá degli Studi dell’Insubria = University of Insubria [Varese] [Uninsubria]
Universitá degli Studi dell’Insubria = University of Insubria [Varese] [Uninsubria]
IOLLO, Angelo
Institut de Mathématiques de Bordeaux [IMB]
Modeling Enablers for Multi-PHysics and InteractionS [MEMPHIS]
Institut de Mathématiques de Bordeaux [IMB]
Modeling Enablers for Multi-PHysics and InteractionS [MEMPHIS]
PUPPO, Gabriella
Universitá degli Studi dell’Insubria = University of Insubria [Varese] [Uninsubria]
< Reduce
Universitá degli Studi dell’Insubria = University of Insubria [Varese] [Uninsubria]
Language
en
Article de revue
This item was published in
Journal of Scientific Computing. 2019-03, vol. 78, n° 3, p. 1893-1916
Springer Verlag
English Abstract
In this work we present a new model of BGK type for polyatomic gases. The model incorporates the different relaxation rates of translational, rotational and/or vibrational modes characterizing polyatomic molecules using a ...Read more >
In this work we present a new model of BGK type for polyatomic gases. The model incorporates the different relaxation rates of translational, rotational and/or vibrational modes characterizing polyatomic molecules using a BGK-type equation, and additional relaxation equations for the temperatures associated to each internal energy mode. We construct an efficient numerical scheme which is implicit in the relaxation terms, and test the model and the scheme on several problems, confirming the Asymptotic Preserving properties of the scheme, and comparing the results provided by the model with experimental and DSMC simulations, carried out on the full Boltzmann polyatomic equation.Read less <
English Keywords
Kinetic models
Polyatomic gas
Multi-temperature
BGK model
AP schemes
Origin
Hal imported