Development of the Richtmyer–Meshkov instability during interaction of the diffusion mixing layer of two gases with transient and reflected shock waves

The evolution of the initially disturbed mixing layer of two gases of different densities under the action of an incident shock wave, shock waves reflected from the end face, compression and expansion waves is studied in a two-dimensional unsteady approximation on the basis of the previously formulated mathematical model of mechanics of a two-velocity two-temperature mixture of gases. Problems of wave interaction with a sinusoidally disturbed diffusion layer are solved numerically. It is shown that the calculated width of the mixing region is in good agreement with experimental data.