Abstract: A numerical method for the computation of 3-D hypersonic ionized flows in thermochemical nonequilibrium has been developed. The thermodynamic state of real gas is modeled with a translational rotational temperature and an electron vibrational temperature. Numerical investigations are performed for 3-D hypersonic ionized flows around an axisymmetric blunt body and over blunt body at angle of attack. Real gas Navier Stokes computations relies on a finite volume approach based on an Implicit NND scheme. The agreement with other computations has been found to be good. The computed electron densities in the flowfield agree well with experimental results.

Key words: thermochemical nonequilibrium, finite volume approach, NND scheme, Navier Stokes equations, three dimensional hypersonic flow