Influence of chemical kinetic model in hypersonic thermochemical non-equilibrium and ionized flow around lifting bodies DURING ATMOSPHERIC REENTRY

Abstract

As a part of the non-equilibrium phenomena which occur behind a strong shock wave, In general, these phenomena observed at hypersonic velocities, we present in this work the vibrational relaxation and the dissociation of the air mixture in a high temperature. Particularly, we interest to the simulation of the flow in the shock layer where the intense thermochemical non-equilibrium phenomena occur, The Park and Zeldovich chemical-kinetic models involves eleven species, N2, O2, NO, N, O, NO+ , N2 +,O2+, N+, O+, e of a kinetic mechanism of 5, 17, 21, 31 reactions is applied. in order to achieve this, we have simulated a two-dimensional and three-dimensional viscous air flow in a chemical non-equilibrium with taking into account the turbulence models using ANSYS Fluent 19 around the Lobb’s sphere, Cone flare, conical Circular body and Capsule fire II. Then we investigated the trajectory of shuttle re-entry. The results obtained present a good agreement with the scientific literature.