The evolution and interaction of channel flow discontinuities under the instant volume energy release influence

The purpose of the work is experimental and numerical investigation of non-steady process of flat shock wave interaction with area of instant volume energy input in the gas at presence of transversal disturbances. The special type of combined discharge – pulse volume discharge with pre-ionization by a ultra-violet radiation from plasmic sheets is used. Instant input of energy in a segment of gas flow is followed by formation and evolution of discontinuities. Numerical simulations presented aim to describe the process of incident shock wave evolution due to the energy instant deposition in front of it. There are 5 domains with constant flow values at the initial moment. On each border of these domain the discontinuity breakdown take place. The subsequent flow is characterized by the complicated process of interaction and evolution of these secondary discontinuities. The structure of the flow patterns being analyzed depends on two parameters: incident shock Mach number and the specific energy input value.