Based on the numerical results, the evolution of shock wave propagating into a convergent wedge includes two processes. In the first stage, the periodic motion, including the shock wave reflection on the surface and the collision of the triple points, is the main process before shock waves focus at the apex. The second stage is the interaction of reflected shock waves and the slipstreams with the secondary shock caused by shock wave focusing, which makes the flow field full turbulent. It is evident that the type of reflection transforms from Mach reflection to double-Mach reflection when the semi-apex angle increases from 30° to 50° and the pressure behind the slipstream becomes higher resulting in making the wall jetting clear.
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