Numerical simulation of nonequilibrium flows by using the state-to-state ap-proach in commercial software
O.V. Kunova1, 2, G.V. Shoev1, 3, and A.N. Kudryavtsev1, 3
1Novosibirsk State University, Novosibirsk, Russia
2St. Petersburg State University, St. Petersburg, Russia
3Khristianovich Institute of Theoretical and Applied Mechanics SB RAS, Novosibirsk, Russia
E-mail: kunova.olga@gmail.com
Keywords: state-to-state kinetics, numerical simulation, nonequilibrium dissociation, vibrational relaxation, shock wave
Pages: 7–17
Abstract
Nonequilibrium flows of a two-component oxygen mixture O2/O behind a shock wave are studied with due allowance for the state-to-state vibrational and chemical kinetics. The system of gas-dynamic equations is supplemented with kinetic equations includ-ing contributions of VT (TV)-exchange and dissociation processes. A method of the numerical solution of this system with the use of the ANSYS Fluent commercial soft-ware package is proposed, which is used in a combination with the authors’ code that takes into account nonequilibrium kinetics. The computed results are compared with parameters obtained by solving the problem in the shock-fitting formulation. The vibrational temperature is compared with experimental data. The numerical tool pro-posed in the present paper is applied to study the flow around a cylinder.
DOI: 10.1134/S0869864317010024
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