Abstract
In this paper, a method to stabilize and smooth pressure distribution in Moving Particle Semi-implicit method is proposed. Incompressible condition is represented by coupling of two traditional conditions. Divergence-Free condition is used to calculate pressure smoothly and particle number density condition is used to keep the volume constant. Quasi-compressibility is considered to make the calculation more stable. A dam break is simulated more stably and pressure distribution is calculated smoothly. Surface particles are detected more accurately. Moreover, the calculation cost is lower than the traditional method.
