Three-Dimensional Thermochemical Nonequilibrium Viscous Flow over Blunt Bodies with Catalytic Surface

The hypersonic thermochemical nonequilibrium airflow over the catalytic surface of a blunt body moving at attack and slip angles along a prescribed aerodynamic reentry trajectory is considered. The thin viscous shock layer theory and the preferential vibration-dissociation-exchange reactions coupling model, which takes into account the interaction between the vibrational relaxation and the chemical processes, are used as an initial gasdynamics model. The efficient computational algorithm on based high-accuracy implicit finite difference scheme is used. The algorithm does not imply the existence of a symmetry plane in the flow and does not need a preliminary solution to the Stefan-Maxwell relations with respect to the diffusion fluxes. The influence of the body shape, of the attack and slip angles, of the heterogeneous chemical reaction model, of the freestream parameters, and of the vibrational nonequilibrium on the heat flux and on the equilibrium surface temperature is investigated.