Thermochemical effects on hypersonic shock waves interacting with weak turbulence

The interaction between a weakly turbulent free stream and hypersonic shock wave is investigated theoretically by using linear analysis (LIA). formulation developed in the limit which thickness of thermochemical nonequilibrium region downstream shock, where relaxation toward vibrational chemical equilibrium occurs, assumed to be much smaller than characteristic size wrinkles caused turbulence. Modified Rankine–Hugoniot jump conditions that account for dissociation excitation are derived employed Fourier interacting with three-dimensional isotropic vortical disturbances. This provides modal structure post-shock gas arising from interaction, along integral formulas amplification enstrophy, concentration variance, kinetic energy (TKE), turbulence intensity across shock. In addition confirming known endothermic effects decreasing mean temperature velocity, these LIA results indicate anisotropy, intensity, TKE fluctuations more amplified through thermochemically frozen case. addition, Reynolds number at Mach numbers presence excitation, as opposed attenuation observed These suggest may persist get augmented waves despite high temperatures.