MPS方法数值模拟液舱晃荡问题  

Application of MPS method in liquid sloshing

作　　者：张雨新[1] 万德成[1] 日野孝则 

机构地区：[1]上海交通大学船舶海洋与建筑工程学院海洋工程国家重点实验室,上海200240 [2]横滨国立大学工学府

出　　处：《海洋工程》2014年第4期24-32,共9页The Ocean Engineering

基　　金：国家自然科学基金项目(11072154;51379125);上海高校特聘教授(东方学者)岗位跟踪计划项目(2013022);国家重点基础研究发展计划(973计划)项目(2013CB036103);工信部高技术船舶科研项目;上海交通大学高性能计算中心(HPC)的资助项目

摘　　要：基于无网格粒子法MPS方法(moving particle semi-implicit method)研究了液舱晃荡问题。针对二维矩形液舱晃荡问题进行了数值验证,结果表明MPS方法能够很好地计算晃荡产生的拍击压力。同时将MPS方法应用到带隔板的液舱晃荡问题计算中,分析了二维和三维带隔板液舱晃荡问题。计算结果表明:隔板的存在很大程度地限制了流体的水平运动,隔板附近出现了自由面的翻卷、破碎和融合现象,MPS方法能够很好地模拟这些流动现象。计算得到的波高与实验测得的波高吻合较好,表明MPS方法模拟带隔板的晃荡问题具有一定的可靠性。In the present study,MPS（Moving Particle Semi-Implicit） method is applied into liquid sloshing flows.Validation is carried out against a 2D rectangular tank subjected to surge motion.The impact pressure obtained numerically on the tank induced by liquid motion is in good agreement with experimental data.In addition,sloshing in baffled 2D and 3D tanks is simulated.Results show that the existence of baffle significantly affects the horizontal motion of liquid.Complicated phenomena,such as overturning,breaking and coalescence of free surface,are obsevred.MPS method shows a good flexibility in dealing with such large deformed free surface flows.Moreover,the agreement between computed wave height and experimental data is good,suggesting MPS method is capable of computing sloshing in baffled tank.

关 键 词：液舱晃荡 移动粒子法(MPS) 拍击压力 自由面 

分 类 号：O353[理学—流体力学]