3D SIMULATION OF GAS FLOW BY PIC CODE WITH AMR TECHNIQUE. COMPUTATION OF SEDOV`S IMPLOSION PROBLEM
O. N. Pavlenko, I. A. Litvinenko
VANT. Ser.: Mat. Mod. Fiz. Proc. 2003. Вып.4. С. 61-67.
The original particle-in-cell method (PIC) with ARM technique for 3D simulation of gas flow with severe deformations is given. Numerical algorithm is described. Sedov’s problem simulation results are presented. The analysis of numerical solution showed the capacity of ARM technique to describe the shock motion from an explosion region which is 200 times smaller than a computational one. The spherical nature of solution remains despite of cube grid. A good agreement with analytic solution is demonstrated. The paper presents computational results for an interaction of a spherical wave generated by a point explosion with a dense spherical body. 3D simulation are in good agreement with 2D PIC simulations.
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English
