International Conference of Physicists.SPb, October 20-24, 2025, Saint Petersburg
Mathematical physics and numerical methods

Numerical modeling of shock-wave structures in supersonic flows of non-equilibrium vibrationally excited gas

S. S. Khrapov, A. V. Khoperskov, N. S. Khrapov

Volgograd State University

Abstract: The dynamics of two-dimensional flows of nonequilibrium gas is considered taking into account relaxation processes, viscosity and thermal conductivity. Based on the numerical gas-dynamic method MUSCL, a parallel computing algorithm is implemented, which allows studying nonlinear wave structures arising in a non-equilibrium medium due to the development of gas-dynamic instabilities with high spatial resolution. A significant increase (by 100–1000 times) in computing performance is shown when using parallel versions of the computing code for GPUs. Numerical modeling of shock-wave structures in a flat two-dimensional channel with injection of a supersonic jet of non-equilibrium gas is carried out.

Keywords: non-equilibrium gas, supersonic jets, shock waves, numerical methods, parallel computing on GPUs.

Received: 06.05.2025
Revised: 10.06.2025
Accepted: 10.06.2025

DOI: 10.61011/JTF.2025.12.61777.247-25

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