基于频域Rankine面元法的船舶耐波性计算和分析  

Seakeeping computation based on Rankine panel method in frequency domain

作　　者：吕向琪 张志恒 张新曙[1,2] 宋兴宇 LYU Xiangqi;ZHANG Zhiheng;ZHANG Xinshu;SONG Xingyu(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

出　　处：《海洋工程》2023年第1期68-81,共14页The Ocean Engineering

基　　金：工信部高技术船舶科研资助项目(MC-201917-C09)。

摘　　要：在频域中分别使用Rankine面元法和去奇点Rankine面元法(desingularized-Rankine panel method,简称DRPM)快速求解有航速船舶耐波性问题。使用两种不同的线性化方式:叠模流线性化法(double-body flow,简称DB)和均匀流线性化方法(Neumann-Kelvin,简称NK)计算了Wigley I、Wigley III和S175在有航速时船舶的水动力系数、波浪激励力和运动响应。两种线性化方法的计算结果与试验结果进行了比较,研究表明:使用Rankine面元法和去奇点Rankine面元法计算的结果相差不大,且与NK法相比使用DB法计算的结果和试验值更吻合,尤其是非对角线上交叉耦合水动力系数A35,B35,A53,B53的计算结果。运动响应对于边界条件线性化方式比较敏感,尤其是垂荡运动,在船共振频率附近,运动受到的影响最明显。In this study,Rankine panel method and desingularized-Rankine panel method are used to quickly solve the problem of seakeeping with speed in frequency domain.For Rankine panel method in frequency domain,two different linearization methods are used:double-body flow linearization method and uniform flow linearization method to calculate the hydrodynamic coefficient,wave excitation force and motion response of Wigley I,Wigley III and S175 ships with forward speed.The results of the two linearization methods are compared with the experimental results.The results of DB method are more consistent with the experimental results compared with NK method,especially for the results of cross-coupling hydrodynamic coefficients A35,B35,A53,B53 on the non-diagonal.The results show that the motion response is sensitive to the linearization method of boundary conditions,especially for heave motion,and the motion is affected most obviously near the ship resonance frequency.

关 键 词：Rankine面元法 耐波性 水动力系数 运动响应 

分 类 号：P751[交通运输工程—港口、海岸及近海工程] U661.32[天文地球—海洋科学]