MPS方法模拟三维圆柱形液舱晃荡问题  

Simulation of sloshing in three-dimensional cylindrical tank by MPS method

作　　者：田鑫 万德成[1,2,3] Tian Xin;Wan Decheng(School of Naval Architecture,Ocean and Civil Engineering,Shanghai Jiao Tong University,Shanghai 200240,China;State Key Laboratory of Ocean Engineering,Shanghai Jiao Tong University,Shanghai 200240,China;Collaborative Innovation Center for Advanced Ship and Deep-Sea Exploration,Shanghai 200240,China)

机构地区：[1]上海交通大学船舶海洋与建筑工程学院,上海200240 [2]上海交通大学海洋工程国家重点实验室,上海200240 [3]高新船舶与深海开发装备协同创新中心,上海200240

出　　处：《中国舰船研究》2019年第3期116-121,共6页Chinese Journal of Ship Research

基　　金：国家自然科学基金资助项目(51879159,51490675,11432009,51579145);长江学者奖励计划资助项目(T2014099);上海高校东方学者特聘教授岗位跟踪计划资助项目(2013022);上海市优秀学术带头人计划资助项目(17XD1402300)

摘　　要：[目的]为了研究在单自由度横荡激励下,激励频率对液舱晃荡现象的影响,将移动粒子半隐式(MPS)方法应用于水平圆柱形液舱晃荡问题。[方法]基于改进的MPS方法和GPU并行加速技术,课题组将自主开发的无网格粒子法求解器MPSGPU-SJTU应用到三维圆柱形液舱晃荡问题中。首先,进行模型验证,对激励频率为一阶固有频率时的晃荡现象进行模拟。然后,在此基础上进行不同激励频率下的晃荡现象计算,并将激励频率在1.2 Hz的模拟结果与实验结果进行对比。最后,在此基础上模拟不同激励频率下液舱的横荡运动。[结果]结果显示,M PSGPU-SJTU求解器能够较好地模拟圆柱形液舱内的液体晃荡现象,也能较为精确地计算液舱受力;当激励频率在固有频率附近时,晃荡现象十分剧烈,当远离固有频率时,晃荡会迅速变弱,液舱受力也随之迅速减小。[结论]所得模拟结果能够为圆柱形液舱的设计应用提供有效参考。[Objectives]This paper applies Moving Particle Semi-implicit (MPS) method to solve the sloshing problem of horizontal cylindrical tank,s o as to study the influence of excitation frequency on sloshing phenomenon under single freedom degree sloshing excitation.[M ethods]B ased on the improved MPS method and GPU parallel acceleration technology,o ur group developed the meshless particle method solver MPSGPU-SJTU and applied the solver to the sloshing problem in a three-dimensional cylindrical tank. Firstly,the model is verified and the sloshing phenomenon is simulated when the excitation frequency is the first order natural frequency. Based on this,the sloshing phenomenon under different excitation frequencies is calculated. The simulated excitation frequency of 1.2 Hz is compared to the test results. Finally,the sloshing movement of cylindrical tank is simulated under different excitation frequencies.[Results]The results show that MPSGPU-SJTU solver can excellently simulate the liquid sloshing phenomenon in the cylindrical tank,a nd can also accurately calculate the force on the tank. When the excitation frequency is near the natural frequency,the sloshing phenomenon is very severe. When the excitation frequency is far from the natural frequency,the sloshing will weaken rapidly and the force on the tank will decrease rapidly.[Conclusions] The simulation results can provide valuable reference for the design and application of cylindrical tanks.

关 键 词：液舱晃荡 圆柱形液舱 移动粒子半隐式方法 MPSGPU-SJTU求解器 

分 类 号：U663.85[交通运输工程—船舶及航道工程]