0 引言
1 风力机多体动力学建模
1.1 整机机组离散模型
Fig. 1 The hybrid multibody system model of DTU 10MW wind turbine图1 DTU10MW整机混合多体模型 |
1.2 风力机多体动力学
2 基于升力线叶片的气动载荷计算
Fig. 2 Schematic diagram of the vortex method model图2 涡方法模型示意图 |
Fig. 3 Schematic diagram of spiral tail vortex图3 螺旋尾涡示意图 |
3 气弹耦合程序设计
Fig. 4 Flow chart of aeroelastic coupling analysis图4 气弹耦合分析流程图 |
4 计算结果与分析
4.1 稳态风工况
Fig. 5 Power and thrust of each wind speed图5 各风速功率、推力 |
Fig. 6 Distribution of effective angle of attack and relative wind speed along spanwise direction图6 有效攻角、相对风速沿展向分布 |
Fig. 7 Distribution of lift and drag coefficients along spanwise direction图7 升力、阻力系数沿展向分布 |
Fig. 8 Distribution of tangential force and axial force along spanwise direction图8 切向力、轴向力沿展向分布 |
4.2 非稳态风况气弹响应
Fig. 9 The curves of wind speed with time in the hub图9 轮毂处风速随时间变化曲线 |
Fig. 10 Curve of power and thrust with time图10 功率、推力随时间变化曲线 |
Fig. 11 Curve of tip flapwise and edgewise displacement with time图11 叶尖挥舞、摆振位移随时间变化曲线 |
Fig. 12 Curve of transverse and longitudinal displacement of tower top with time图12 塔顶横向、纵向位移随时间变化曲线 |