摘要
针对概念设计的位于南海的三腿TLP浮式风机基础,应用基于水动力与空气动力耦合的FAST程序在时域内开展了风机基础的动力响应分析。结果表明,风载荷对TLP风机基础六个自由度的动力响应,尤其是纵摇影响显著。由于耦合作用,二阶波浪力进一步增大了基础的纵荡、横摇和艏摇响应。谱密度分析表明,风载荷及二阶波浪力显著地增大了浮式基础水平面内的低频运动。此外,基于风机基础运动时程,应用ORCAFLEX软件开展了时域内筋腱的顶部张力特性分析,结果表明,风载荷和二阶波浪力增大了筋腱顶张力幅值。
The hydrodynamic response of a three-leg TLP wind turbine system designed for South China Sea conceptually was studied in time domain using FAST, based on the coupled effect of hydrodynamic and aerodynamic forces. The results show that the dynamic responses of TLP wind turbine system at six degrees of freedom, especially pitch, are increased significantly under the wind load. Due to the coupled effect, the sway, roll and yaw are increased further under the effect of the second-order wave force. The analysis of the power spectral density indicates that the wind load and the second-order wave force increase the low frequency motion in horizontal plane. Additionally, based on the motion history of the TLP wind turbine system, the characteristics of tendon top tension were analyzed using ORCAFLEX in time domain. The results show that the top tension range increases significantly under the effect of the wind and the second-order wave force.
出处
《海洋工程》
CSCD
北大核心
2017年第3期52-58,111,共8页
The Ocean Engineering
基金
国家973课题资助项目(2014CB046804)
国家自然科学基金项目(51409185)
天津市应用基础与前沿技术研究计划(15JCYBJC21700)
关键词
TLP风机基础
二阶波浪载荷
风载荷
耦合动力分析
筋腱
动力响应
TLP wind turbine system
second-order hydrodynamic force
wind force
coupled dynamic analysis
tendon
hydrodynamic response
