用移动粒子半隐式法模拟液舱横摇晃荡现象  

Moving-Particle Semi-Implicit Method for Simulation of Liquid Sloshing on Roll Motion

作　　者：潘徐杰[1] 张怀新[1] 

机构地区：[1]上海交通大学船舶海洋与建筑工程学院,上海200030

出　　处：《上海交通大学学报》2008年第11期1904-1907,共4页Journal of Shanghai Jiaotong University

基　　金：国家自然科学基金(50579035)资助项目

摘　　要：应用移动粒子半隐式法(MPS)模拟了半满粘性液舱的横摇晃荡运动.模拟中每个时间步分为显示和隐式两步,控制方程中利用粒子与周围粒子之间的关系取代了传统方法中的差分项,利用粒子数密度的变化来判别自由表面.MPS法作为一种Lagrange数值方法,存在着粒子穿透现象.文中使用了一种防穿透方法,取得了较好的结果.结果表明,MPS法在复杂曲面的布点及自由表面的表现上有一定的优势.A meshless numerical simulation method was presented to simulate the rolling of a liquid tank. In moving-particle semi-implicit method （MPS）, each step of the simulation is decomposed into two steps. explicit step and implicit step. In Navier-Stokes equations, the relationship of partials is used to replace the difference term in old methods, and the variety of particles＇ number density is used to discern free surface. As a full Lagrange method, the pass through phenomenon is always taken place in simulation. A method used in this paper can reduce the pass through phenomenon and achieve a good result.

关 键 词：晃荡 横摇 粘性流体 不可压缩流体 移动粒子半隐式法 

分 类 号：O357.1[理学—流体力学]