MPS方法在二维液舱晃荡中的应用  

Application of MPS Method for 2D Liquid Sloshing

作　　者：张雨新[1] 万德成[1] 

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

出　　处：《复旦学报（自然科学版）》2013年第5期618-626,634,共10页Journal of Fudan University：Natural Science

基　　金：国家自然科学基金(11072154,51009091,51379125);海洋工程国家重点实验室自主研究课题基金(GKZD010059);上海东方学者人才计划基金(2008007)资助

摘　　要：基于移动粒子法(MPS)对二维矩形液舱和LNG液舱在不同频率和不同运动方式时的晃荡问题进行研究,分析了拍击压力和波形的特点,并将数值结果与实验做对比,验证了MPS方法的可靠性.计算结果表明:MPS方法得到的压力曲线能够很好地与实验和其他数值结果相吻合,对于拍击时刻和拍击压力的预测都有较好的精度.此外,MPS方法能够很好地处理晃荡中剧烈的自由面变形,如翻卷、破碎、液体飞溅等现象.MPS（Moving Particle Semi-Implicit） method is applied to liquid sloshing in 2D rectangular tank and LNG tank which are subject to various motions with various excitation periods. The impact pressure and wave in the tank are analyzed, and numerical results are compared with experimental data to validate the reliability of MPS. It shows that MPS method is reliable in prediction of impact behavior in sloshing flow, the pressure evolutions predicted by MPS method are in good agreement with experimental and other numerical results. In addition, some complicated flow phenomena, such as overturning free surface, breaking wave and splashing water, are observed in simulation. The NIPS method is robust and has a good flexibility in handling such violent free surface flow.

关 键 词：液舱晃荡 移动粒子法(MPS) 拍击压力 自由面流动 

分 类 号：O532[理学—等离子体物理]