Three-dimensional computational model of nonequilibrium aerophysics of mars re-entry vehicles

A three-dimensional computational model of nonequilibrium aerothermodynamics of Mars landing vehicles is presented. The model is based on the system of Navier-Stokes equations, energy conservation equation in the form of the Fourier-Kirchhoff equation for translational temperature, vibrational kinetics equations for six vibrational modes of N2, O2, CO2, CO molecules and multi-group spectral radiation heat transfer equation. Numerical simulation results are presented for two- and three-dimensional cases of non-equilibrium flows for EXOMARS space vehicle, intended for Martian mission. Numerical simulation codes NERAT-2D and NERAT-3D, developed at the IPMech RAS, with structured multi-block curvilinear grids were used for prediction of the fields of gasdynamic functions, as well as convective and radiation heating of the spacecraft surface.