自由表面流动的移动粒子半隐式模拟方法  

Numerical Simulation of Fluid Free Surface Flow Using Moving Particle Semi-Implicit Method

作　　者：席光[1] 项利峰[1] 

机构地区：[1]西安交通大学能源与动力工程学院,西安710049

出　　处：《西安交通大学学报》2006年第3期249-252,288,共5页Journal of Xi'an Jiaotong University

基　　金：教育部跨世纪优秀人才基金资助项目

摘　　要：引入可压缩因子,对移动粒子半隐式方法(MPS)进行了改进,解决了MPS方法在计算中容易出现的不稳定问题.使用改进后的方法对液柱倒塌算例进行了模拟计算,并将计算结果与实验及其他数值计算结果进行了比较.计算表明,引入可压缩因子大大提高了计算的稳定性,且方法简单易于实现,在液柱与挡板发生碰撞、流体发生大变形时依然能进行有效地模拟.A compressible factor was applied to improve the stability of calculation procedure in the moving particle semi-implicit method for the numerical simulation of fluid free surface flow. Collapse of a liquid column was successively simulated using the improved algorithm and the resuits were compared with the relative experiments and other numerical simulations. It is shown that the introduction of a compressible factor largely increases the computation stability, and the proposed method is simple and effective to simulate fluid free surface flow even when the collision happens and big deformation exists.

关 键 词：自由表面流动 数值模拟 移动粒子半隐式方法 可压缩因子 

分 类 号：TH45[机械工程—机械制造及自动化] O351.2[理学—流体力学]