Numerical simulation of the effect of porous cooling in aerodynamic heating of the elements of air ducts and surfaces by a hypersonic viscous gas flow

Effectiveness of the conception of porous cooling is diagnosed in numerical stimulation of aerodynamic heating of a wall that is caused by interaction of a generated shock wave and a boundary layer developing along the surface in a hypersonic flow past a wall and a blunt wedge. The developed programming complex based on the solution of the system of the Navier-Stokes and Reynolds equations, which in the latter case is closed by two differential equations of a dissipation two-parameter model of turbulence, by the explicit-implicit finite-difference McCormack method is tested in the solution of a classic problem of interaction between an oblique shock wave and a turbulent boundary layer. The results of calculation are compared to the available data of experimental studies. Numerical prediction of flow characteristics and heat transfer showed a substantial decrease in the heat transfer in the case of realization of low-intensity gas injection at the most thermally stressed site of the wall.