Improved method of splash fluid simulation based on ISPH

Flowing and splashing are the most common fluid phenomena in the nature. Fluid simulation has already been widely used in film, game and other industrial numerical field. Furthermore, both the theoretical study [1] and the practical experience [2] show that simulations of flexible fluid splashes and other dynamic scenarios are more accurate and intuitive than those using only static predictive analysis. Aiming at the numerical instability problem of the incompressible SPH method when simulating fluid splashing, this paper presents an improved Poisson pressure equation solution which can improve the simulation accuracy by replacing the pressure source term. The experimental results show that the pressure distribution of the fluid in our method is more in line with the real fluid, and it can also ensure better pressure stability and realism when severe changes occur.