Modeling of polyatomic gases in the kinetic Fokker-Planck method by extension of the master equation approach

An extension of the Fokker-Planck method for polytatomic gas using the master equation approach is presented. The model is compatible with different Fokker-Planck formulations. An example using the cubic formulation is provided. Code-to-code comparison between the new model and the DSMC implementati...

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Bibliographic Details
Main Authors: Basov, Leo, Grabe, Martin
Format: Conference Proceeding
Language:English
Subjects:
Hypersonic flow
Polyatomic gases
Two dimensional flow
Online Access:Get full text
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Summary:An extension of the Fokker-Planck method for polytatomic gas using the master equation approach is presented. The model is compatible with different Fokker-Planck formulations. An example using the cubic formulation is provided. Code-to-code comparison between the new model and the DSMC implementation in the PicLas code of the university of Stuttgart is presented using a heat bath temperature relaxation as well as two dimensional, non-reacting, hypersonic flow over a flat-faced cylinder. The heat bath test case shows very good agreement between the DSMC and Fokker-Planck implementation. The hypersonic test case compares very well qualitatively but as expected shows deviations in ares of strong thermal non-equilibrium.
ISSN:0094-243X
1551-7616
DOI:10.1063/5.0187658