A particular type of Mach reflection—the inverse Mach reflection—is investigated both experimentally and theoretically. It is shown that the inverse Mach reflection is of a fundamental type in truly unsteady flows. The special characteristics of the inverse Mach reflection as well as the differences between it and the well-known stationary and direct Mach reflections are discussed. A unique property of the inverse Mach reflection, i.e., its reflection from a solid surface, is revealed experimentally and explained analytically using shock polars. The importance of this research lies in the fact that the inverse Mach reflection plays a significant role in the Mach reflection phenomenon in truly unsteady flows to which many such phenomena in nature belong.
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Takayama et al. (1985) studied this question.
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