三维浮体的二阶波浪力计算研究  

Calculation of Second-Order Wave Forces for Three Dimensional Floating Bodies

作　　者：李男 张君彦[1] 李文华[1] 林珊颖[1] 葛杨元 LI Nan;ZHANG Jun-yan;LI Wen-hua;LIN Shan-ying;GE Yang-yuan(National Center for International Research of Subsea Engineering Technology and Equipment,College of Marine Engineering,Dalian Maritime University,Dalian 116026,China;China Classifi cation Society Certifi cation Company,Beijing 100006,China;Nantong Li Wei Machinery Company Limited.,Rugao 226500,China)

机构地区：[1]大连海事大学轮机工程学院海底工程技术与装备国际联合研究中心,大连116026 [2]中国船级社质量认证公司,北京100006 [3]南通力威机械有限公司,如皋226500

出　　处：《船舶》2020年第6期24-34,共11页Ship & Boat

基　　金：国家重点研发计划资助项目(2018YFC0309003);高等学校学科创新引智计划(111计划,B18009);中央高校基本科研业务费专项项目(3132020186,3132019041).

摘　　要：基于一阶势的二阶力计算方法,给出了定常力、二阶力传递函数的相关计算公式推导;借鉴AQWA软件的方法,引入二阶入射和绕射差频力的近似计算方法,并编制相关计算程序;基于算例FPSO给出了与AQWA软件的定常力、二阶力平方传递函数计算结果对比;并且对扩展边界积分法对定常力结果的影响,湿表面变化、速度势梯度平方等定常力分量对合成结果的贡献,以及二阶差频力平方传递函数随水深的变化等进行了分析,并总结了研究中应注意的相关问题。The relevant calculation formulas of the steady force and the second-order force transfer function are derived from the second-order force calculation of the fi rst-order potential.The second-order differential frequency forces of the incident and diffractive waves arethen approximately calculatedand the corresponding calculation program is compiled based on the method of AQWA.The calculated steady force and the second-order force quadratic transfer function of a fl oating production storage and offl oading(FPSO)unit are compared with those results from the AQWA.It also analyzes the infl uence of the extended boundary integral equation method on the steady forces,and the contribution of the steady force components,such as thevariation of the wet surface and the square of the velocity potential gradient,to the resultants,as well as the variation of the quadratic transfer function of the second-order frequency difference force with water depth.At last,the problems that should be noticed are summarized.

关 键 词：水动力 定常漂移力 二阶力传递函数 近场方法 

分 类 号：U661.3[交通运输工程—船舶及航道工程]