摘要
分别针对MIT/NREL TLP和Umaine-Hywind Spar两种海上风力机浮式平台主体的水动力特性进行研究,旨在分析两者的系泊稳定性.基于海洋水动力学和结构动力学理论,建立了平台/缆索系统耦合模型,在水深和外界载荷激励相同的情况下,利用有限元分析ANSYS软件中的水动力学计算模块进行时域、频域响应分析,研究了两种平台在海风、海流和随机波联合作用下的动态响应,并分析了两种平台随波浪频率的响应变化.结果表明:MIT/NREL TLP平台的动态响应较大,而Umaine-Hywind Spar平台动态响应较小;两平台均在低频波浪作用下产生响应峰值.
The studies on hydrodynamic characteristics of MIT/NREL TLP and Umaine- Hywind Spar for offshore wind turbines are done to analyze the two floating platforms. Based on marine hydrodynamics and structural dynamics theories, a coupled model of platform/cable is constructed to carry out time domain and frequency domain analysis with the same sea depth and external excitations using hydrodynamic calculation module of ANSYS,so as to study the dynamic responses of the two platforms under the combined effects of wind, current and irregular waves. Analyses about the response variations of the platforms with the wave frequency changes are also engaged. The results show that Umaine-Hywind Spar has weaker responses than MIT/NREL TLP. Besides, both of two platforms arrive at the maximum responses when the wave frequency is low.
出处
《能源研究与信息》
2015年第3期168-173,共6页
Energy Research and Information
基金
上海市研究生创新基金资助项目(JWCXSL1302)
上海市教育委员会科研创新资助项目(13YZ066)
国家自然科学基金资助项目(51176129)
关键词
海上风力机
漂浮式平台
时域
频域
动态特性
offshore wind turbine
floating platform
time domain
frequency domaindynamic performance
