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应用CFD技术对风力机叶片二维翼型和三维整机的气动力性能进行计算和分析研究,建立风力机叶片二维翼型在-180°~180°攻角范围内气动力性能分析计算方法,通过NACA翼型和DU翼型的算例验证表明,小攻角范围内的计算结果具有较高的精度,大攻角范围的计算结果趋势合理。建立三维风力机叶片在设计工况和偏航工况的气动力性能分析计算方法,计算结果与通用风力机叶片设计分析软件Focus的结果吻合良好。所建立的数值计算方法可应用于风力机二维翼型和三维气动力性能优化设计中,并可为风力机叶片设计分析软件提供重要的气动力载荷输入数据。
The aerodynamic performance of two-dimensional airfoil and three-dimensional turbine of wind turbine blades is calculated and analyzed by using CFD technology. The aerodynamic performance analysis and calculation method of two-dimensional airfoil of wind turbine blades in the angle of attack from -180 ° to 180 ° is established A numerical example of NACA airfoil and DU airfoil shows that the calculation results in the range of small angle of attack have higher accuracy and the trend of calculation in high angle of attack range is reasonable. The aerodynamic performance analysis and calculation method of three-dimensional wind turbine blade in design condition and yawing condition are established. The calculation results are in good agreement with the results of Focus, a general-purpose wind turbine blade design and analysis software. The established numerical method can be applied to two-dimensional airfoil and three-dimensional aerodynamic performance optimization design of wind turbine and can provide important aerodynamic load input data for wind turbine blade design and analysis software.