Abstract
The structure of a standing plane shock wave in a polyatomic gas is investigated on the basis of kinetic theory, with special interest in the CO2 gas. The polyatomic version of the ellipsoidal statistical model is employed, and the shock structure is obtained numerically for several Mach numbers for a pseudo-CO2 gas, which is an artificial CO2 gas with smaller ratio of the bulk viscosity to the viscosity. The double-layer structure consisting of a thin upstream layer with a steep change and a much thicker downstream layer with a mild change, which has been known for a long time and was confirmed recently by the extended thermodynamics [S. Taniguchi et al., Int. J. Non-Linear Mech. 79, 66 (2016)], is reproduced.
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