大型风力机三维空气动力学数值模拟

3D numerical simulation for aerodynamic performance of large scale wind turbine

采用数值模拟的方法,对三种风力机叶片的空气动力学性能进行研究。计算得到了旋转功率随着来流速度的变化曲线,并将所得结果与基于动量叶素理论的工程设计方法结果、风洞实验结果和风场实测结果进行对比。计算结果体现了CFD方法解决这种问题的有效性。所用的数值模拟方法可以广泛地应用到风力机设计和气动性能评价中,所得结果可作为叶片动态特性及气弹稳定性分析的载荷而被应用于风力机性能和可靠性的评估当中。

The aerodynamic performances of three kind of wind turbine blades are studied by numerical simulation means. The rotational power curves get by CFD means are compared with the results by BEM means, wind tunnel experimental means and wind fields measurements. The simulating results indicate that the CFD means is effective to solve this kind of problem. The numerical simulation method used by this article can be widely used in design and aerodynamic performance estimate of wind turbine. The results of this study can be used as wind load to get the dynamic character and aeroelastic performance to evaluate ability and security of wind turbine.