Numerical simulation of two-dimensional nonequilibrium supersonic flows within the model of viscous shock layer

The results are given of systematic numerical calculations of supersonic how of viscous gas at zero angle of attack past axisymmetric smooth blunt bodies with a catalytic surface, with due regard for nonequilibrium chemical reactions and multicomponent nature of the diffusion occurring in the how. To solve the input equations of multicomponent viscous shock layer by the method of relaxation in time, an implicit numerical method is used of high order of approximation on the coordinate reckoned along a normal to the surface of the body being flown about, which is highly efficient and does not require preliminary resolution of the Stefan-Maxwell relations relative to diffusion fluxes. Based on the solution of the problem on hypersonic flow of nonequilibrium dissociating air past bodies of different shapes upon its motion along a preassigned trajectory of entry into the atmosphere of the Earth, the effect of a number of determining parameters of the problem an the qualitative behavior of how and of distribution of the coefficients of friction and heat transfer along the surface of a body is analyzed, and the accuracy and range of validity of a number of approximate approaches to the solution of this problem are estimated.