Study on Shock wave-Vortex Ring Interaction by the MVG Controlled Ramp Flow with Turbulence inlet from DNS

摘要

In this study, we investigate the interaction between vortex rings and the oblique shocks by the MVG controlled ramp flow at M=2.5 and Re_θ=5760. A kind of large eddy simulation method is used by solving the unfiltered form of the Navier-Stokes equations with the Sth order Bandwidth-optimized WENO scheme. A series of turbulent profiles are obtained from previous DNS simulation result. It shows that the ring structure does not break down and keeps it topology after penetrating the strong shock wave and the oblique shocks is influenced a lot by the induced flow field from rings. The bump of the 3D shock wave surface is discovered and its mechanism is explained.