Structure of free supersonic jets studied by means of the Boltzmann equation

Different schemes for direct solving the Boltzmann equation are used. Parallel algorithms with multiprocessors technique are applied for free jet problems in a wide range of Knudsen numbers. The attention is focused on the study of mechanism of the transition to instability in a mixing layer. Vortices of the Goertler–Taylor type are appeared. At the supercritical regime the stochastic character of pulsation is confirmed for small kinetic scales of the step of time.