Numerical investigation of the reflection of asymmetric shock waves in steady flow: Transitions (RR-MR) and Hysteresis Phenomenon

摘要

The analytical study and experimental research on the reflection of the asymmetric shock waves (RR-MR interference), in the stationary supersonic flows been reported for the first time by H. Li and al [1]. The purpose of this research is to perform numerical simulations (CFD) on the Interference shock waves in the supersonic flows and more particularly being studied of the transition regular reflection (RR) to Mach reflection (MR) and vice versa - phenomenon hysteresis. This last process was largely studied numerically in the case of the symmetrical reflections during these last years. The analysis of the results obtained was based on experimental results H. Li and al [1], and compared analytically by the theory of tripled shock (shock polar). The theoretical study allowed the identification of the criteria of transition, and clearly shows the existence of a hysteresis phenomenon in the transition (RR) - (MR), from the asymmetric shock waves similar to that existing in interaction of symmetrical shock waves.