Numerical simulation for fluid-structure interaction with particle method

The Smoothed Particle Hydrodynamics(SPH) method is presented to simulate the fluid-structure interaction with a free surface. The Navier-Stokes(N-S) equations of Lagrangian form are solved and the SPH formulations are applied to discretize the gradient, divergence and Laplacian terms in the N-S equations. The SPH method has the advantages of simple numerical algorithm and easy to track the free surfaces and large deformations. Two computation cases of the fluid-structure interactions are given at last, and the results show that the computed results are in good agreement with those from the other methods.