基于移动脉动源格林函数的船舶耐波性时域计算方法研究（英文）  

Time Domain Analysis on Ship Motions in Waves with Translating-Pulsating Source Green Function

作　　者：孙小帅 姚朝帮 熊鹰[3] 叶青 SUN Xiao-shuai;YAO Chao-bang;XIONG Ying;YE Qing(China Marine Development and Research Center,Beijing 100000,China;School of Naval Architecture and Ocean Engineering,Huazhong University of Science and Technology,Wuhan 430074,China;School of Naval Architecture and Ocean Engineering,Naval University of Engineering,Wuhan 430033,China)

机构地区：[1]中国海洋开发研究中心,北京100000 [2]华中科技大学船舶与海洋工程学院,武汉430074 [3]海军工程大学船舶与海洋工程学院,武汉430033

出　　处：《船舶力学》2019年第6期631-642,共12页Journal of Ship Mechanics

基　　金：Supported by the National Natural Science Foundation of China(No.50879090 and No.51509256);the Key Program of Hydrodynamics of China(No.9140A1403071251311044);the Aeronautical Science Foundation of China(Grant No.20152316005);the Innovation Research Foundation for Ph.D.Candidates of Naval University of Engineering(Grant No.4142C15F)~~

摘　　要：本文基于三维移动脉动源格林函数(Three Dimensional Translating-Pulsating source Green function,3DTP)求解的水动力系数,通过频时域转换法求解时延函数,建立了船舶耐波性时域计算方法,比较了在平动坐标系和随动坐标系下求解船体运动方程对运动计算结果的影响,并与频域计算结果和试验结果进行了对比。结果表明,采用频时域转换法求解时延函数快速高效。在耐波性平动坐标系下求解船体运动方程得到的运动结果与频域结果相比存在偏差,在重心随动坐标系下求解船体运动方程得到的运动结果与频域结果和试验结果吻合良好。The seakeeping performance of a ship in waves was investigated in time domain,with the retardation function computed from transforms of frequency hydrodynamic data evaluated based on the Three Dimensional Translating-Pulsating source Green function(3DTP).The motion equations were referenced to both the equilibrium axis system and the body fixed axis system.Comparisons were made among the present time domain method,the frequency domain method and the experiment.The results indicate that it is highly efficient to calculate the retardation function by the frequency to time domain transformation method.The motion responses obtained from equations referenced to the equilibrium axis system indicate shifts when compared with the frequency domain results,especially for the pitch motion,while motion responses obtained from equations referenced to the body fixed axis system indicate satisfactory agreement with both the frequency domain results and experimental results.

关 键 词：三维移动脉动源格林函数 耐波性 时域 时延函数 

分 类 号：U661.1[交通运输工程—船舶及航道工程]