Further Investigation on the Physics of Shock Wave -Vortex Interaction In MVG Controlled Ramp Flow

摘要

In this study, we investigate the interaction between ring-like vortices and the oblique shocks by the MVG controlled ramp flow at M=2.5 and Re =5760 in detail by high order LES. A series of turbulent profiles are obtained from previous DNS simulation results. The interaction seems to be a continuous process to the ring-like vortex structure. The vortex structure never breaks down and is not influenced even when it is passing through the shock wave. However, both instantaneous and time averaged results show that the shock wave breaks down in the process. Multiple layer of shock wave structure is observed and the effect on the shock wave from the ring-like vortices is studied. It is proved that the ring-like vortex structure generated by MVG is the key factor to the flow separation control, which is caused by the shock-boundary layer interaction.