Three dimensional numerical simulation study on the flow of the explosion shock wave around the wall

The partial differential conservation equations for mass, momentum and energy are applied by adopting the compressible fluid model for the explosion flow field. Based on the Eulerian algorithm of multi-material in cell (MMIC), the operator splitting scheme is used, and the moving interface is treated by volume ratio method. The development of the shock wave near the explosion source and in the explosion field caused by three-dimensional air explosion are simulated using three-dimensional numerical simulation code MMIC3D compiled by authors. The formation and change of the flow field around the corner wall are studied. Furthermore the effects of the explosion shock wave are analyzed and compared with the empirical formula because of different locations and different shapes of the protective wall. The simulation results turn out to be in full agreement with the principle of physics. It also indicates that the model and algorithm presented in this paper are proper, thus the numerical simulation can be used for engineering design of decompression facilities.