非线性静水恢复力影响下的海上漂浮式Spar型风机水动力特性  

Hydrodynamic Characteristics of Offshore Spar Floating Wind Turbine Under Influence of Nonlinear Hydrostatic Restoring Stiffness Force

作　　者：庞正阳 冯爱春[1,2] 蒋致禹 尤云祥[1,2] 陈科[1,2] PANG Zhengyang;FENG Aichun;JIANG Zhiyu;YOU Yunxiang;CHEN Ke(State Key Laboratory of Ocean Engineering,Shanghai Jiao Tong University,Shanghai 200240,China;Sanya Yazhou Bay Institute of Deep-Sea Science and Technology,Shanghai Jiao Tong University,Sanya 572024,Hainan,China;Department of Engineering Sciences,University of Agder,N-4898 Grimstad,Norway)

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]上海交通大学三亚崖州湾深海科技研究院,海南三亚572024 [3]阿哥德大学工程学院,格里姆斯塔N-4898

出　　处：《中国海洋平台》2024年第2期19-27,共9页China offshore Platform

基　　金：海南省自然科学基金(编号:2021JJLH0094)。

摘　　要：研究非线性静水恢复力对海上漂浮式Spar型风机的水动力特性的影响。通过解析法推导非线性静水恢复刚度系数,并使用AQWA中的非线性模型验证当前推导的解析解的准确性。考虑非线性静水恢复刚度系数,采用编程程序对Spar型浮式风机进行时域分析,将结果与线性静水恢复力作用下的运动响应进行对比,并分析Spar型浮式风机的水动力特性以及静水非线性带来的影响。结果表明:流体静力非线性对浮式风机垂荡响应有显著影响,且这种影响随浮式风机旋转运动增大而增大;在极限海况下,由静水非线性引起的垂荡、横摇和纵摇响应差异为16%~40%,显示非线性静水力在运动响应中应予以重视。The influence of nonlinear hydrostatic restoring force on the hydrodynamic characteristics of offshore floating Spar wind turbines is studied.The nonlinear hydrostatic restoring stiffness coefficient is derived by the analytical method and verified by the linear model in AQWA.Considering the nonlinear hydrostatic restoring stiffness coefficient,the time-domain analysis of the Spar floating wind turbine is carried out by programming,the results are compared with the motion response under linear hydrostatic restoring force,and the hydrodynamic characteristics of the Spar floating wind turbine and the influence of the hydrostatic nonlinearity are analyzed.The results show that:the fluid static nonlinearity is of a significant impact on the heave response of the floating wind turbine,and this impact increases with the increase of the rotating motion of the floating wind turbine;under the extreme sea conditions,the difference in the heave,roll and pitch response caused by the hydrostatic nonlinearity is within 16%to 40%,showing that the nonlinear hydrostatic force should be taken seriously in the motion response.

关 键 词：浮式风机 浮体稳定性 非线性 静水恢复刚度系数 

分 类 号：P752[天文地球—海洋科学] TM315[电气工程—电机]