A NUMERICAL METHOD TO SOLVE 3D PROBLEMS OF HIGH-VELOCITY GAS JET INTERACTION WITH ELASTOPLASTIC BARRIERS
M. Kh. Abuzyarov, E. G. Glazova, A. V. Kochetkov, S. V. Krylov
VANT. Ser.: Mat. Mod. Fiz. Proc 2021. Вып.4. С. 24-40.
A numerical method to solve 3D problems of high-velocity gas jet interaction with elastoplastic barriers is described. The method is based on the unified modified difference method by S. K. Godunov to compute both energy release at detonation and gas motion and dynamic deformation of elastoplastic barriers. The method realizes Eulerian-Langrangian approach with explicit identification of moving contact surfaces using multi-mesh algorithms. Results of numerical research on the process of high-velocity jet formation in П-shaped charges with a small elongation and its interaction with elastoplastic steel barrier are provided. Thee numerical results agree well with the known experimental data. Keywords: numerical simulation, Godunov scheme, improved accuracy, multi-mesh approach, 3D problem, explosion, detonation, high-velocity jets, elastoplastic barrier, interaction, comparison with experiment.
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