DTC在斜浪作用下船舶漂移力的计算  

Computation of wave drift forces and motions of DTC ship in oblique waves

作　　者：刘聪 王建华[1] 万德成[1] LIU Cong;WANG Jian-hua;WAN De-cheng(Collaborative Innovation Center for Advanced Ship and Deep-Sea Exploration,State Key Laboratory of Ocean Engineering,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5期590-599,共10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)~~

摘　　要：船舶在波浪中行驶时,船体会在波浪力的作用下改变原有的航向。为了估计波浪对船舶操纵性能的影响,该文对波浪作用下的DTC(Duisburg Test Case)船模进行了计算,对船舶受到的平均波浪力进行了分析并与试验进行了对比。计算基于自主开发的naoe-FOAM-SJTU求解器,利用VOF(Volume of Fluid)方法对自由液面求解,利用重叠网格技术和六自由度运动模块对船舶的波浪运动响应进行了计算,利用waves2Foam开源程序对数值波浪进行模拟。计算结果显示,波浪平均漂移力的计算结果与试验结果吻合良好,波浪频率对船体受力及运动起主导作用。同时计算也捕捉到了波浪对船体的强烈砰击作用。该文实现了对波浪漂移力的精确模拟,为进行船舶在波浪中的运动计算模拟及分析提供了支持。When a ship travels in waves,its course may be changed under the effect of wave drift force.To assess this influence on ship maneuverability,the DTC(Duisburg Test Case)model under a set of wave environments is taken into account,and the average wave force on ship is obtained and compared with the experimental results.All cases in the paper are calculated by our in-house solver,naoe-FOAM-SJTU,in which the free surface is solved by VOF(Volume of Fluid)method,the ship motion is captured by overlapping grid technology and six-degree-of-freedom motion module,and the desired wave conditionscan be generated by linking an open-source library,waves2 Foam.The simulation results show that the wave drift force is in good agreement with the measurement,and the wave frequency dominants the force and the motions of the hull.In addition,the strong wave slamming can be captured by the present simulation.In this paper,remarkably accurate prediction of wave forces is achieved,which gives a fundamental ability to tackle with the calculation and analysis of ship motion in waves.

关 键 词：波浪漂移力 naoe-FOAM-SJTU求解器 重叠网格 数值造波 

分 类 号：O357[理学—流体力学]