多液舱晃荡与养殖工船时域耦合运动的数值模拟  

Numerical simulation of aquaculture ship motions coupled with tanks sloshing in time domain

作　　者：肖凯隆 陈作钢[1,2,3] XIAO Kailong;CHEN Zuogang(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;School of Naval Architecture,Ocean and Civil Engineering,Shanghai Jiao Tong University,Shanghai 200240,China)

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

出　　处：《中国舰船研究》2020年第1期136-144,共9页Chinese Journal of Ship Research

基　　金：中国水产科学研究院渔业机械仪器研究所资助项目(15DZ1202100)。

摘　　要：[目的]为研究多液舱养殖工船在横向波浪激励下,其液舱晃荡与船体运动的时域耦合问题,对其进行数值模拟。[方法]采用脉冲响应函数法预报船体运动,基于CFD理论模拟计算液舱晃荡问题,并讨论壁面剪切力对液舱晃荡的影响。为验证数值方法的可靠性,进行载液工船模型横摇自由衰减试验,并将试验结果与数值结果进行对比。同时,在此基础上,提出多液舱模型的二维简化方法。[结果]计算结果表明:在横向波浪激励下,波浪频率为0.5 rad/s时,液舱晃荡使养殖工船横摇幅值响应算子峰值增大了43%。液舱晃荡可能会给载液船舶的安全性带来风险,应该在设计阶段充分考虑。[结论]研究成果可为多液舱船的优化设计提供参考。[Objectives] For multi-tank aquaculture ships, the numerical method is used to study the coupling problem between tank sloshing and hull motion under transverse wave excitation in the time domain.[Methods] Hull motion is predicted using the impulse-response function method, the sloshing phenomenon is simulated based on the CFD theory, and the influence of the wall shear force on sloshing is discussed. In order to verify the effectiveness of the numerical method, a free-rolling experiment on a ship model with liquid-loaded tanks is carried out, and the experimental results are compared with the numerical results, showing a good match. Furthermore, a two-dimensional simplified model of the multi-tank model is proposed[Results] The calculation results show that the sloshing phenomenon increases the maximum value of the rolling amplitude response operator by 43% under transverse wave excitation with wave frequency at0.5 rad/s. [Conclusions] The sloshing phenomenon may bring risks to the safety of liquid-loaded ships, and should be fully considered during the design process.

关 键 词：多液舱晃荡 养殖工船 脉冲响应函数 耦合运动 时域模拟 

分 类 号：U661.32[交通运输工程—船舶及航道工程]