Analysis of the canonical turbulent shock front (original) (raw)

The shock and turbulence interaction is of essential importance to understand the physics of supersonic turbulence. Physically, in the shock region the local fluid element is strongly compressed with a sharp change of the fluid parameters, e.g. temperature, pressure and density. In the turbulent supersonic flow, a key problem of interest is about the amplification factor, which focuses on the linkage between physical quantities in the upstream (supersonic) and downstream (subsonic) region. Based on a linearized analysis Anyiwo and Bushnell (1982) derived the amplification (or generation) function with respect to the turbulence disturbance. From such analysis they summarized different turbulence amplification mechanisms. Larsson, Lee and other collaborators performed a set of landmark direct numerical simulations (DNS) of the canonical shock/turbulence interaction in a series of works [2–4]. The important topics investigated include the relation of the dissipative scale in the upstre...