Abstract
MPS (Moving Particle Semi-Implicit) method is an effective method to solve the simulation of large-deformation free surface fluid flow. In order to improve the stability and accuracy of the MPS method, this paper proposes a collision model between fluid particles. The collision model assumes that the collisions between fluid particles are completely elastic collisions and follow the law of conservation of momentum and energy. The improved MPS method is used for the fluid simulation of two-dimensional and three-dimensional fluid dam break model. The simulation results show that the improved MPS algorithm has good stability, the calculation results are in better agreement with the experimental data, and it has a wider range of adaptability. The improved MPS method is more suitable for the simulation of large-deformation free surface fluid flow.
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