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Thermophysics and Aeromechanics

2016 year, number 2

Development and testing of a numerical simulation method for thermally none-quilibrium dissociating flows in ANSYS Fluent

G.V. Shoev1,2,3, Ye.A. Bondar1,2, G.P. Oblapenko3, and E.V. Kustova3
1Khristianovich Institute of Theoretical and Applied Mechanics SB RAS, Novosibirsk, Russia
2Novosibirsk State University, Novosibirsk, Russia
3St.-Petersburg University, St. Petersburg, Russia
Keywords: numerical simulation, thermal nonequilibrium, dissociation, vibrational relaxation, shock waves, real gas effects
Pages: 151–163

Abstract

Various issues of numerical simulation of supersonic gas flows with allowance for thermochemical nonequilibrium on the basis of fluid dynamic equations in the two-temperature approximation are discussed. The computational tool for modeling flows with thermochemical nonequilibrium is the commercial software package ANSYS Fluent with an additional user-defined open-code module. A comparative analysis of results obtained by various models of vibration-dissociation coupling in binary gas mixtures of nitrogen and oxygen is performed. Results of numerical simulations are compared with available experimental data. 

DOI: 10.1134/S0869864316020013