不可压缩流动的移动粒子半隐式法数值模拟  

Simulation for Incompressible Flow with Moving Particle Semi-implicit Method

作　　者：孙中国[1] 席光[1] 项利峰[1] 

机构地区：[1]西安交通大学,西安710049

出　　处：《应用力学学报》2007年第3期440-442,共3页Chinese Journal of Applied Mechanics

摘　　要：介绍了一种新的移动粒子半隐式方法。该方法采用Lagrange描述,用一系列离散粒子代替流体,通过半隐式求解和时间推进法来进行计算,弥补了传统网格法对复杂形状、大变形、高速撞击等情况下网格划分和重构过于繁琐的缺点,在模拟不可压缩流动问题中得到了较好的效果。The Moving Particle Semi-implicit Method is introduced,where Fluid is described by a set of discrete particles in Lagrange description,and the semi-implicit equation is solved on every time step.Some disadvantages of the traditional mesh methods are made up,such as complexities of creating and re-creating mesh in the case of complex shape,large distortion or high speed crash.The method enables to simulate incompressible flow perfectly.

关 键 词：无网格法 移动粒子半隐式方法 数值模拟 

分 类 号：O351.2[理学—流体力学]