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In this study, we investigate the interaction between vortex rings behind MVGand the oblique shocks in the MVG controlled ramp flow at M=2.5 and Req=5760.Implicit large eddy simulation (ILES) method is used by solving the unfilteredform of the Navier-Stokes equations with the 5th order Bandwidth-optimized WENOscheme. The fully developed inflow is given by a series of turbulent profilesobtained from previous DNS simulation. It shows that the ring structure doesnot break down and keeps its topology after penetrating the strong shock waveand the oblique shocks is influenced a lot by the induced flow field fromrings. The bump of the 3D shock wave surface is discovered and its mechanism isexplained.

LES Study on the Mechanism of Vortex Rings behind Supersonic MVG with Turbulent Inflow