The phenomenon of shock wave refraction on a gaseous interface with plasma was analyzed for nonideal gas effects. The developed model was applied to nondissociating diatomic nitrogen gas at 3000 K. Comparatively to ideal gas, the interface reflectivity was found noticeably decreased resulting in 12% more intense shock transmission. The transition point determining the character of reflected wave was also found shifted with its coordinate being strongly dependent on incident shock strength and sort of gas. It was found that a delay in gas pressure drop and a sharp reduction of vorticity generated in the postshock flow are possible. The influence of real-gas effects on the shock instability locus, interface distortion, and wave drag reduction is discussed.

中文翻译：

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与冲击波相互作用时气体非理想性对界面反射率的影响

分析了等离子体气态界面上的冲击波折射现象的非理想气体效应。开发的模型应用于 3000 K 的非离解双原子氮气。与理想气体相比，发现界面反射率显着降低，导致冲击传输强度增加 12%。还发现决定反射波特性的过渡点发生偏移，其坐标强烈依赖于入射冲击强度和气体种类。发现气体压降的延迟和震后流动中产生的涡量的急剧减少是可能的。讨论了真实气体效应对冲击不稳定轨迹、界面畸变和波阻减小的影响。