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Thermophysics and Aeromechanics

2021 year, number 4

Numerical simulation of underexpanded supersonic jets impingement on an inclined flat plate

A.S. Epikhin1,2, T.G. Elizarova3
1Ivannikov Institute for System Programming RAS, Moscow, Russia
2Bauman Moscow State Technical University, Moscow, Russia
3Keldysh Institute of Applied Mathematics RAS, Moscow, Russia
Keywords: numerical simulation, underexpanded jet interaction, shock-wave structures, regularized (quasi-gas dynamic) equations, QGDFoam, OpenFOAM


The paper presents the results of numerical simulation of complex shock-wave structures arising from an underexpanded jets impingement on an inclined flat plate. The plate deflection angles equal to 45º, 60º, and 90º are investigated, which corresponds to different types of shock waves interference. The gas-dynamic characteristics are calculated using the OpenFOAM software package with the QGDFoam solver. This solver based on a system of regularized (quasi-gas dynamic) equations. The numerical simulation results of the flowfields and pressure distributions at the plate are compared against the results of the Kurganov -Tadmor scheme and with experimental data. The features of the applied numerical approach for simulation complex shock-wave structures with triplet points, contact discontinuities, and low-entropy flows are identified.