张力腿式浮式风机平台的水动力和空气动力耦合响应分析

摘要

A fully coupled time-domain aero-hydro-servo-elastic simulation of a tension-leg-platform (TLP) floating wind turbine is conducted. 3-D potential theory and Morison equation are applied to calculate the hydrodynamic loads. Blade element momentum theory and generalized dynamic wake the-ory are applied to calculate the aerodynamic loads. Time series results are obtained and analyzed to study the coupled dynamic responses of the TLP floating wind turbine. An analytic equation govern-ing the surge motion was formulated and solved based on perturbation method. This equation can ex-plain the high frequency response in surge motion induced by the nonlinearity of viscosity. From the analysis results, the dynamic responses of the TLP floating wind turbine are obtained and analyzed, and it is found that the high frequency component of the response has significant impact on the plat-form's dynamic performance.%文章采用了空气动力、水动力、控制与弹性完全耦合的时域模拟方法研究了张力腿式浮式风机平台的动力响应.水动力载荷的计算采用了三维势流理论与Morison公式.空气动力载荷的计算采用了叶素动量理论和广义动态尾流理论.利用FAST软件得到了张力腿式浮式风机平台响应的时域结果,并分析了其动力响应特性.建立了描述平台纵荡运动的非线性微分方程,并采用了摄动方法求得其近似解,解释了纵荡运动中由非线性粘性效应引起的高频响应.对数值模拟结果的分析表明高频的响应分量对平台的动力性能有显著的影响.