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针对风力机翼型的形状曲线,基于广义泛函和保角变换理论,提出了具有集成和通用特性的翼型型线函数表征式。从该表征式出发,建立了翼型的优化设计模型。比起传统的反设计方法,提出了一种更为直接、高效的全新翼型优化设计方法,为风力机新型翼型的开发提供了新的思路。选取相对厚度为18%的翼型进行了优化计算分析,得出了优化翼型的形状及其气动特性,通过和风力机常用翼型Ris(?)系列以及NACA系列的性能比较,很好地验证了该优化方法的可行性和优化结果的优越性。
Aiming at the shape curve of wind turbine airfoils, based on generalized functional theory and conformal transformation theory, the expression of airfoil line function with integrated and general characteristics is proposed. Based on the representation, an optimized design model of airfoil is established. Compared with the traditional anti-design method, a more direct and efficient new airfoil optimization design method is proposed, which provides a new idea for the development of the new airfoil. The airfoil with a relative thickness of 18% was selected and optimized. The shape and aerodynamic characteristics of the optimized airfoil were obtained. Comparing with the common airfoil Ris (?) Series and the NACA series of wind turbines, The feasibility of the optimization method and the superiority of the optimization results are verified.