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
庞正阳 1冯爱春 1蒋致禹 2尤云祥 1陈科1
作者信息
- 1. 上海交通大学海洋工程国家重点实验室,上海 200240;上海交通大学 三亚崖州湾深海科技研究院,海南 三亚 572024
- 2. 阿哥德大学工程学院,格里姆斯塔N-4898
- 折叠
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.
Abstract
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Key words
floating wind turbine/floating stability/nonlinear/hydrostatic restoring stiffness coefficient引用本文复制引用
基金项目
海南省自然科学基金(2021JJLH0094)
出版年
2024
NETL
NSTL
维普
万方数据