The Influence Of Vibrational Energy Relaxation On Laminar-Turbulent Transition

The stability of vortical disturbances propagating at an angle to the main flow in a nonequilibrium compressible supersonic boundary layer has been investigated. The dependences of the critical Reynolds number on the degree of nonequilibrium and on the Mach number were defined at different angles of wave propagation. It was calculated the time of explosive instability, which realized on stage of nonlinear critical layer. The increment of secondary instability versus degree of non-equilibrium S and amplitude of primary equilibrium solution was founded.