考虑Spar型浮式基础粘性阻尼作用浮式垂直轴风机运动性能研究（英文）

Motions of the Floating VAWT Considering the Viscous Damping of the Spar Type Floating Foundation

本文研究了5MWΦ型达里厄浮式垂直轴风力机的运动性能.浮式基础为具有垂荡板的Spar型浮式基础,使用CFD(计算流体动力学)方法计算了基础的粘性阻尼;建立了浮式风机系统的纵荡、垂荡和纵摇非线性耦合动力学方程;通过三个典型算例,评估了浮式风机系统的动力性能,分析了气动载荷对浮式风机系统的运动影响.结果表明,该浮式风机系统的纵荡、垂荡及纵摇运动幅值均较小;由于风机叶片弦长较大,风机叶片承受较大的气动载荷,Case 2中风机系统纵荡和纵摇运动的均值较大.

The motion performance of a 5MWΦ-type Darrieus VAWT(vertical axis wind turbine)was studied in this paper.The floating foundation was of Spar type with heave plates,the viscous damping of which was calculated by using the CFD(Computational Fluid Dynamics)method.The surge,heave and pitch nonlinear coupling dynamic equations of the floating VAWT were established;three typical cases were used to assess the responses of the floating VAWT,and the effects of the aerodynamic loads on the motions of the floating VAWT were analyzed.The results show that the amplitudes of surge,heave and pitch of the floating VAWT are small for the three cases,while the mean values of surge and pitch for case 2 are relatively large due to the blades bearing large aerodynamic loads and the chord of the blades is large.