Influence of Different Inlet Flow on the Ring-like Vortex Structure in MVG Controlled Supersonic Ramp Flow

In this paper, we study the influence on the ring-like vortex structure in MVG controlled supersonic ramp flow by different inflow conditions. In front of the MVG, three turbulent inflow profiles with different boundary layer thickness are generated as the inflow. From the shape factors, we can see that these inflows in front of the MVG are fully developed turbulent. It is found that the inflow conditions give significant influences to the ring-like vortex structure including the ring-like vortex shapes, vorticity origins, momentum deficit zones, streamwise velocity profiles after MVG, vortex organizations, and, more important, the interaction between vortex rings and shocks which control the boundary layer separation.