Physics-based fluid-solid interaction of ocean simulation using SPH

Realistic simulation of natural scene has always been a hot and difficult problem in the field of computer graphics, the simulation of dynamic fluid is particularly prominent. Ocean is a representative, it plays a key role in the field of virtual reality. In the research of ocean simulation based on physics, the details are not enough and the fluid-solid interaction authenticity is poor. Therefore, the fluid-solid interaction simulation of ocean simulation is important. In this paper, we propose a fluid-solid simulation method, a two-way interaction simulation between solid model and fluid particles based on control points. Smoothed Particle Hydrodynamics (SPH) algorithm based fluid simulation is realized and B-spline function is chosen as the kernel function through the comparative analysis of Gauss kernel function, B-spline kernel function and Quintic spline kernel function. In view of the low efficiency in the process of the fluid surface reconstruction problem, we put forward a method to limit the extraction process on the surface of the fluid. We improve the boundary movement and add some random parameter values based on the direct rebound method, cut speed in a certain degree and implement a more realistic boundary movement effect. Experiment results show the simulation effects of this method.