BGK and Fokker-Planck models of the Boltzmann equation for gases with discrete levels of vibrational energy
Language
en
Article de revue
This item was published in
Journal of Statistical Physics. 2020
Springer Verlag
Date
2020English Abstract
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 ...Read more >
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.Read less <
English Keywords
BGK model
H-theorem
Rarefied Gas Dynamics
vibrational molecules
Fokker-Planck model
Origin
Hal imported