ИСТИНА

Diffraction of a shock wave (M = 3.13–3.34) by a rectangular parallelepiped and transition to a stationary flow with an oblique shock wave were visualized by the glow of a volume discharge 300-500ns duration. The discharge energy redistribute in an inhomogeneous density field during the electric current. When the shock wave is inside the chamber at the time of the initiation of the discharge, the plasma is localized in areas of low density: in front of the shock and in a vortex on the near the wall of the obstacle. The obtained data of CCD plasma glow recording is compared with the corresponding CFD results: a numerical simulation based on the Euler equations of a nonstationary two-dimensional flow was performed under experimental conditions.