MPS方法数值模拟减摇水舱晃荡流动问题  

Numerical simulation of liquid sloshing in anti-roll tank by MPS method

作　　者：文潇 万德成[1] WEN Xiao;WAN De-cheng(State Key Laboratory of Ocean Engineering,School of Naval Architecture,Ocean and Civil Engineering,Shanghai Jiao Tong University,Collaborative Innovation Center for Advanced Ship andDeep-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海洋工程国家重点实验室高新船舶与深海开发装备协同创新中心

出　　处：《水动力学研究与进展（A辑）》2019年第4期489-493,共5页Chinese Journal of Hydrodynamics

基　　金：国家自然科学基金项目(51879159,51490675,11432009,51579145);长江学者奖励计划(T2014099);上海高校特聘教授岗位跟踪计划(2013022);上海市优秀学术带头人计划(17XD1402300);工信部数值水池创新专项VIV/VIM项目(2016-23/09)~~

摘　　要：船舶六自由度运动中,横摇对船舶的安全性影响十分严重。船舶在设计建造时,常采用减摇装置来降低横摇运动对船舶安全的危害。其中,减摇水舱因其结构简单、经济、便于养护,且在低航速和无航速情况下仍能发挥作用而得到广泛应用。为对减摇水舱的减摇特性进行深入研究,该文采用基于半隐式移动粒子MPS方法开发的MLParticle-SJTU求解器,对三维矩形被动式减摇水舱的晃荡进行了数值模拟。首先,进行了减摇水舱和舱内液体晃荡在外界激励下耦合运动的模拟,并将模拟结果与空舱横摇情况进行对比,证明了减摇水舱的减摇效果。然后,将减摇水舱横摇角的历时变化曲线与实验结果进行对比,验证了MPS方法的适用性与可靠性。最后,分析了减摇力矩与外界激励力矩之间的相位差,解释了减摇水舱的工作原理。In present paper, the in-house mesh-less solver MLParticle-SJTU, based on the improved MPS(moving particle semi-implicit) method, is employed to simulate the three-dimensional liquid sloshing in the passive rectangular anti-roll tank and investigate its damping characteristics. The roll motion amplitude of anti-roll tank, obtained from MPS simulation, largely decreases compared with empty tank, confirming the damping effect of anti-roll tank. The MPS results show good agreement with the experimental results in literature, validating the applicability and reliability of MPS method in researches on anti-roll tank.Furthermore, the phase difference between the damping moment and the external excitation moment is analyzed, and the anti-roll principle can be explained by the phase difference.

关 键 词：MLParticle-SJTU MPS方法 减摇水舱 液舱晃荡 

分 类 号：O357[理学—流体力学]