BGK and Fokker-Planck models of the Boltzmann equation for gases with discrete levels of vibrational energy
Langue
en
Article de revue
Ce document a été publié dans
Journal of Statistical Physics. 2020
Springer Verlag
Date de soutenance
2020Résumé en anglais
We propose two models of the Boltzmann equation (BGK and Fokker-Planck models) for rarefied flows of diatomic gases in vibrational non-equilibrium. These models take into account the discrete repartition of vibration energy ...Lire la suite >
We propose two models of the Boltzmann equation (BGK and Fokker-Planck models) for rarefied flows of diatomic gases in vibrational non-equilibrium. These models take into account the discrete repartition of vibration energy modes, which is required for high temperature flows, like for atmospheric re-entry problems. We prove that these models satisfy conservation and entropy properties (H-theorem), and we derive their corresponding compressible Navier-Stokes asymptotics.< Réduire
Mots clés en anglais
BGK model
H-theorem
Rarefied Gas Dynamics
vibrational molecules
Fokker-Planck model
Origine
Importé de halUnités de recherche