Nanosecond volume discharge in the non-stationary high-speed profiled channel flow

The aim of the work is an experimental and numerical investigation interaction between pulse volume discharge with a high-speed flow in rectangular profiled channel (obstacle on bottom wall). special type combined discharge—pulse preionization by ultraviolet radiation from plasma sheets—is used. around obstacle influences distribution. short-pulse initiation high power leads to effects observable time range up millisecond. Ultrafast local heating medium formation blast (shock) waves carried out during creation nonequilibrium sub microsecond pulsed plasma. duration shock-wave effect 20 120 μs supersonic transonic flow. spatially inhomogeneous distribution energy input associates density lowest areas, which occur gas regime bottom. Discharge localization regions are sources more intense wall surface observed infrared range. A calculation order match calculated dynamical configurations.