Simulate Wave Body Interaction Based on the Incompressible SPH Method

AbstractThe smoothed particle hydrodynamics method (SPH) has been proved to have an excellent ability in dealing with issues related to the wave. Compared with the SPH method, the incompressible smoothed particle hydrodynamics (ISPH) method has solved the pressure by solving the Poisson equation, rather than by solving the equation of state. The ISPH method presents a good approach to capture the free surface particle. With the respect of the SPH method, the ISPH method shows more stability and accurate of the numerical results than the traditional SPH method. This paper presents an ISPH method for two dimensional wave-body coupled problems, especially for the move structure. In most conventional ISPH techniques, the boundary is fixed; in this work, the move boundary is applied in the ISPH method. Then the model is applied to two problems: (1) interaction between a fixed rectangular structure and a liner wave; (2) two dimensional floating rectangular structure coupled with the nonlinear wave. The final results show agreement with the experiment data and phenomena