摘要
建立基于Umaine-Hywind Spar平台的漂浮式风力机整机模型,针对平台进行水动力特性分析,主要研究结构的时域动态响应和频域波浪力响应。利用有限元软件ANSYS中水动力计算模块,考虑风、浪、流联合载荷,得到风力机平台的时域和频域特性,通过平台随时间的位置变化幅度分析了平台的动态响应特性;分别研究了各波浪力成分对结构运动的贡献,并探讨了波浪力随频率的变化趋势。结果表明:结构在低频波浪作用下容易出现较大响应,包括幅值响应算子和所受波浪力;在主要波浪力成分中,附加质量力峰值最大;结构在外界载荷作用下平台的偏转运动比水平位移运动更显著。
Based on building wind whole machine model of floating type of Umaine-Hywind Spar platform and according to hydrodynamic characteristics analysis,the paper mainly researched the time domain and frequency domain response of the the structure. It used the water power calculation module in finite element software ANSYS,considered the joint load of wind,wave and flow for the time domain and frequency domain properties of wind machine platform. Through observating the location variation of platform with time,the paper analyzed the dynamic response characteristics of platform; Respectively studied the component＇s contribution of wave forces to the structure motion,and probed into the change trend of wave force with frequency. Results show that the structure appears large response under the effect of low frequency waves,including amplitude response operator and the wave force; In the main composition of wave force,added mass force peak is maximum; Deflection movement of the structure under the action of external load platform is more significant than that of horizontal displacement.
出处
《水资源与水工程学报》
2014年第2期118-122,共5页
Journal of Water Resources and Water Engineering
基金
上海市研究生创新基金项目(JWCXSL1302)
上海市教育委员会科研创新项目(13YZ066)
国家自然科学基金项目(51176129)
关键词
漂浮式风力机
SPAR平台
水动力特性
动态响应
floating wind turbine
Spar platform
hydrodynamic performance
dynamic response
