An ES-BGK model for polyatomic gases in rotational and vibrational nonequilibrium
MATHIAUD, J.
Commissariat à l'Energie Atomique et aux Energies Alternatives [CEA-CESTA]
Centre d'Etudes Lasers Intenses et Applications [CELIA]
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Commissariat à l'Energie Atomique et aux Energies Alternatives [CEA-CESTA]
Centre d'Etudes Lasers Intenses et Applications [CELIA]
MATHIAUD, J.
Commissariat à l'Energie Atomique et aux Energies Alternatives [CEA-CESTA]
Centre d'Etudes Lasers Intenses et Applications [CELIA]
Commissariat à l'Energie Atomique et aux Energies Alternatives [CEA-CESTA]
Centre d'Etudes Lasers Intenses et Applications [CELIA]
MIEUSSENS, Luc
Institut de Mathématiques de Bordeaux [IMB]
Centre d'Etudes Lasers Intenses et Applications [CELIA]
< Réduire
Institut de Mathématiques de Bordeaux [IMB]
Centre d'Etudes Lasers Intenses et Applications [CELIA]
Langue
en
Article de revue
Ce document a été publié dans
European Journal of Mechanics - B/Fluids. 2021-02-23, vol. 88, p. 1-16
Elsevier
Résumé en anglais
We propose an extension of the Ellipsoidal-Statistical BGK model to account for discrete levels of vibrational energy in a rarefied polyatomic gas. This model satisfies an H-theorem and contains parameters that allow to ...Lire la suite >
We propose an extension of the Ellipsoidal-Statistical BGK model to account for discrete levels of vibrational energy in a rarefied polyatomic gas. This model satisfies an H-theorem and contains parameters that allow to fit almost arbitrary values for the Prandtl number and the relaxation times of rotational and vibrational energies. With the reduced distribution technique , this model can be reduced to a three distribution system that could be used to simulate polyatomic gases with rotational and vibrational energy for a computational cost close to that of a simple monoatomic gas.< Réduire
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