Effect of gaseous non-ideality on the shock wave structure under different mach numbers

Abstract Nonideal gas effects exist widely in shock wave problems such as dense gas, implosion, and magnetic fluids. Based on a recent study (Jiang H et al 2025 Eur. Phys. J. Plus 140 192) and the calculation method provided in the present study, the main objective of this study is to examine the effect of gaseous non-ideality on the shock wave structure and compare the characteristics of the effect under different Mach numbers. Post-shock, the results show that gaseous non-ideality has a greater effect on the velocity and density, less effect on the pressure and entropy change, and hardly any effect on the temperature. The larger the pre-shock Mach number, the greater the effect of gaseous non-ideality on shock wave structure parameters. With the exception of the shock thickness and entropy change, the variation in the structural parameters is affected by the pre-shock Mach number to varying degrees owing to gaseous non-ideality. The effects of gaseous nonideality on the shock compression mechanism and its effect law under different Mach numbers are revealed.