船舶摇荡运动分析的线性时域切片方法  

Linear time-domain strip method for ship motion prediction

作　　者：张亚晖 马山[2] 段文洋[2] ZHANG Yahui;MA Shan;DUAN Wenyang(Shanghai Merchant Ship Design and Research Institute,Shanghai 201203,China;College of Shipbuilding Engineering,Harbin Engineering University,Harbin 150001,China)

机构地区：[1]上海船舶研究设计院,上海201203 [2]哈尔滨工程大学船舶工程学院,黑龙江哈尔滨150001

出　　处：《中国舰船研究》2018年第A01期1-6,28,共7页Chinese Journal of Ship Research

基　　金：国家自然科学基金资助项目(51379045;51879058);国防基础科研计划资助项目(B2420132001)

摘　　要：[目的]为了研究船舶在波浪中运动预报的非线性切片方法,从线性时域切片方法出发进行初步探究。[方法]在切片假设前提下,推导二维剖面满足的边界条件,求解二维剖面的水动力系数,进而求解全船的受力及运动响应,并采用方向导数的数值差分方法计算速度势沿船长的偏导数。计算Wigley I船的水动力系数及KVLCC2船、8 000 TEU集装箱船的运动响应,并与其他相关方法的计算值及试验值开展对比研究。[结果]结果显示,所得结果与模型试验结果总体上吻合良好,具有良好的适用性。[结论]所做研究对后续开展船舶非线性时域切片运动预报具有一定的借鉴意义。[Objectives]In order to study the nonlinear strip method for prediction of ship motions in waves,this paper develops a linear time-domain strip method to make a preliminary exploration.[Methods]Under the assumptions of strip theory,the boundary conditions for 2D section are established,and after the calculation of hydrodynamic force coefficient of 2D section,the force and motion response of the whole ship are solved.The numerical differentiation algorithm is used to solve the partial derivative of velocity potential along the ship length direction.The calculated hydrodynamic force coefficient of Wigley I ship and the calculated motion response of KVLCC2 and a 8 000 TEU container ship are compared with the calculated and test values of other related methods.[Results]It is found that the results are generally consistent with the model test results,and can be applied in practice.[Conclusions]This study,to some extent,lays a basis for the future research on the nonlinear time-domain strip method for ship motion prediction.

关 键 词：船舶摇荡运动预报 时域理论 切片方法 数值差分法 

分 类 号：U661.32[交通运输工程—船舶及航道工程]