Strong Shock Reflection Phenomenon over a Non-flat Wedge

Abstract

The present study reports the quantitative behavior of the reflected wave over a multi-guttered or a step-like wedge, when the incident shock wave is strong (the incident shock Mach number Mi = 1.915). The experiment analysis revealed that the behavior of the first triple-point differed depending on the wedge inclination angle. Furthermore, the height of the first triple-point is greater for multi-guttered wedges than for step-like wedges. The angle made by the incident and reflected waves decreases more or less sinusoidally toward its corresponding asymptotic value. The behavior on the angles of incidence and reflection plane demonstrates that, although angles of incidence and reflection vary as the incident shock propagates and they do not agree with the three-shock theory, they move toward some asymptotic value on the three-shock theory. These asymptotic values for both wedges and ordinary smooth wedges differ from each other.