Monday 30 May 2022- INRIA Paris
Julien Mathiaud Université de Bordeaux

Construction of moment models for rarefied gas dynamics

In this presentation, we will propose new moment models (BGK/ Fokker Planck) to solve rarefied gas dynamics problems. A formal framework will be proposed to create conservative models with entropy dissipation. It will be shown in particular that the ESBGK model of Perthame/LeTallec can be found in this framework while specifying the physical values of the model parameters. Moreover, the fluid asymptotics of these models will be obtained.

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