Wall temperature jump in polyatomic gas flows

Méolens, J. Gilbert and Dadzie, S. Kokou (2006) Wall temperature jump in polyatomic gas flows. In: 25th International Symposium on Rarefied Gas Dynamics, 2006-07-21 - 2006-07-28.

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This article deals with the calculations of the temperature jump at the wall for gas flows in the slip regime. The analytical calculations are based on kinetic boundary conditions developed especially for polyatomic molecules. When compared to an expression previously obtained for unstructured molecules, the polyatomic molecule temperature jump reveals supplementary terms of bulk viscosity type due to the internal mode excitation. These terms may be important in high speed flows or in gas flows displaying significant relative density variation at the wall.