CFD数值模拟船舶在波浪中的回转操纵运动  

CFD simulation of ship turning motion in waves

作　　者：王建华[1,2,3] 万德成 Wang Jianhua;Wan Decheng(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》2019年第1期1-8,共8页Chinese Journal of Ship Research

基　　金：国家自然科学基金资助项目(51809169;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);工信部数值水池创新专项VIV/VIM项目(2016-23/09)

摘　　要：[目的]船舶回转操纵运动能够反映出船舶的回转特性,与船舶的航行安全密切相关。[方法]为此,采用基于重叠网格技术的CFD求解器naoe-FOAM-SJTU,对标准船模ONRT在波浪中自由回转操纵运动进行直接数值模拟。运用动态重叠网格技术求解船、桨、舵系统复杂运动,计算中,螺旋桨转速对应于静水中的船模自航点进行35°转舵,实现自由回转船舶操纵运动。通过全粘性流场的整体求解,给出波浪中自由回转操纵运动中船舶六自由度运动、螺旋桨和舵的水动力载荷变化,以及波浪中船舶的回转圈特征参数,并与同试验结果进行对比。通过数值计算得到精细的流场信息,分析波浪对船舶自由回转操纵运动的影响。[结果]数值预报得到的船舶运动轨迹、回转圈参数与试验值吻合较好,证明naoe-FOAM-SJTU求解器对于波浪中船—桨—舵相互作用下的船舶自由回转操纵运动数值预报的适用性和可靠性。[结论]船舶回转操纵运动的数值模拟,可为回转性能的评估提供有效的前期评估手段。[Objectives]The ship turning motion can reflect the steerability of the ship during navigation and is closely related to the ship navigation safety.[Methods]In this paper,the direct numerical simulation of the free turning motion of the standard ship model ONRT in waves is carried out by using CFD solver naoe-FOAM-SJTU based on overset grid technology.The dynamic overset grid technology is used to solve the complex motions of the ship,propeller and rudder systems,and calculate the medium propeller speed corresponding to the self-propulsion point of model in still water.The free turning motion of 35°is realized here.[Results]Through the global solution of the fully viscous flow field,6 DoF motions of the ship in the waves and hydrodynamic load changes of the propeller and rudder are given.The parameters of the ship turning motion in waves are presented and compared with the available test results.Wave effects on the free turning motion are discussed through detailed flow visualizations.The ship's motion trajectory and the parameters of the turning motion obtained by numerical prediction are in good agreement with the test values,which fully proves the applicability and reliability of naoe-FOAM-SJTU solver in the numerical prediction of the ship's free turning motion under the hull-propeller-rudder interaction of the ship.[Conclusions]Through numerical simulation of the turning motion,it provides an effectively preliminary assessment for the steerability of the ship.

关 键 词：船舶操纵性 自由回转 船-桨-舵相互作用 naoe-FOAM-SJTU求解器 重叠网格方法 

分 类 号：U661.33[交通运输工程—船舶及航道工程]