Abstract
The weakly ionized high enthalpy flow in thermochemical nonequilibrium over blunt bodies at zero incidence is investigated. The numerical technique uses time dependent Navier–Stokes equations which relies on a multi-block finite volume scheme based on a second-order accurate Total-Variation-Diminishing. The convective flux terms are calculated by Riemann’s solvers based on a MUSCL approach, and the viscous terms are discretized by second-order central difference. The flowfield is thermally characterized by multi-temperatures, and the correction of the speed of sound due to the electron translational temperature has been included. An evaluation of aerothermodynamics parameters is carried out for RAM-C flights (which is a 9° sphere–cone). A good comparison is shown with previous simulations and experimental data.
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