Thermochemical Non-Equilibrium Reentry Flows in Two-Dimensions: Seven Species Model - Part II

摘要

This work, second part of this study, presents a numerical tool implemented to simulate inviscid and viscous flows employing the reactive gas formulation of thermochemical non-equilibrium. The Euler and Navier-Stokes equations, employing a finite volume formulation, on the context of structured and unstructured spatial discretizations, are solved. These variants allow an effective comparison between the two types of spatial discretization aiming verify their potentialities: solution quality, convergence speed, computational cost, etc. The aerospace problems of the hypersonic "hot gas" flows around a double ellipse and around a reentry capsule, in two-dimensions, are simulated. The reactive simulations will involve an air chemical model of seven species: N, O, N_2, O_2, NO, NO~+ and e~-. Eighteen chemical reactions, involving dissociation, recombination and ionization, will be studied. The Arrhenius formula will be employed to determine the reaction rates and the law of mass action will be used to determine the source terms of each gas species equation.