强非线性波浪力及风场尾流效应耦合作用下浮式风机极限载荷研究

随着海上风电逐渐从浅海向深海发展及风机大型化发展，叶片长度增长、柔性增大、几何非线性效应显著增加，浮式风机在环境载荷下将产生更为复杂的动力响应。此外，风场中尾流湍流强度的增加会改变受尾流效应影响风机的极限和疲劳载荷，因此研究受尾流效应影响的浮式风机动力响应非常重要。本项目旨在构建15MW超大型张力腿支撑平台及系泊筋腱，建立张力腿型浮式风机全耦合模型数值计算模型，研究超大型浮式风机动力学机理；建立张力腿型浮式风机的ringing载荷计算模型，揭示环境载荷及ringing影响下浮式风机空气动力-水动力-控制-结构动力-系泊的运动响应机理；研究风场尾流效应和ringing载荷对张力腿型浮式风机的耦合作用机制，掌握浮式风机在尾流效应及ringing耦合影响下的极限及疲劳载荷预报方法；研究不同形式的风场布置方案对风场效率和极限载荷的影响，为浮式风场布置提供技术支撑。

With the gradual development of offshore wind power from shallow water to deep water and the large-scale development of wind turbines, the length of the blades increases as well as the flexibility, and the geometric nonlinear effect increases significantly as the result. Floating wind turbines will experience more complex dynamic responses under environmental loads. In addition, the increase of wake turbulence intensity in the wind field will change the extreme and fatigue load of the wind turbine affected by the wake. Therefore, it is very important to study dynamic responses of the floating wind turbine under the effect of wind farm wakes. This project aims to construct a 15 MW ultra-large tension leg type support platform and mooring tendons, establish a fully coupled numerical calculation model of the TLP floating wind turbine, explore the dynamic mechanism of the ultra large scale floating type wind turbine; establish the transient ringing loads calculation model of the tension leg type floating wind turbine, and reveals the mechanism of aero-hydro-servo-elastic-mooring dynamic responses under the influence of environmental loads and ringing forces; investigate the interaction mechanism of wind field wake turbulence intensity and ringing loads on the TLP wind turbine, and study the calculation method of the extreme and fatigue load of floating wind turbines under the coupling influence of wake and ringing; study the influence of different types of wind farm layout schemes on wind farm efficiency and extreme loads, which provides technical support for the layout of floating wind farms.