The effect of vibrational and dissociation relaxation on the flow variables in a viscous shock front

A study of supersonic flow of a reacting and relaxing gas past a blunt body is presented. The conditions investigated are those in the vicinity of the stagnation point at low and moderate Reynolds numbers, with and without mass injection at the body's surface. The analysis is carried out on the model of a thin hypersonic shock front with and without allowance for the interaction between the viscous shock front and shock wave. The flow is investigated under conditions of nonequilibrium dissociation-recombination reaction in the gas phase and nonequilibrium recombination at the body's surface. Data are presented on the effect of flow disequilibrium in the gas phase, the catalytic activity of the surface, and of mass injection on the gasdynamic characteristics of the shock.