流动空气压差比拟与风电叶片翼型线确定理论的探讨

翼型是风电叶片设计的关键元素，对风电叶片的气动性能、风能转化和利用率都有重要影响。因此，翼型研究一直是风电叶片研究的热点和难点。论文深入分析了流动空气与风电叶片的相互作用，提出了用空气重力比拟其流动前后压差产生的动力的概念，建立了流动空气沿风电叶片流动的能量转化关系，以此为基础推导出了风电叶片翼型线理论公式，并用Xfoil软件对比分析了翼型线理论公式确定的新翼型和BRUXEL36翼型，发现在-2°~6°攻角条件下，新翼型具有较高升阻比，其中在攻角为3°时，新翼型升阻比高出BRUXEL36翼型25左右。论文研究为流动空气与风电叶片相互作用理论及风电叶片翼型线理论的发展提供了新尝试和重要借鉴。

Research on flowing air pressure difference analogy and wind turbine blades airfoil profile determination theory

Airfoil is the key factor in wind power blades design, which has an important influence on the aerodynamic performance,wind energy conversion and wind energy utilization of wind turbine blades. There-fore,blade airfoil research is a difficult problem and hot issue in wind turbine blade research. In this the-sis,the interaction between flowing air and wind turbine blades is analyzed in depth,the concept of analo-gy between the air gravity and power is generated by flow between pre- and post air pressure difference is put forward, and the energy conversion relationship of air flows along wind turbine blades is established. Based on this, the theoretical formula of wind turbine blades airfoil profile is derived. And the Xfoil soft-ware was used to compare and analyze the new airfoil determined by the theoretical formula of the airfoil profile and BRUXEL36 airfoil. It was found that the new airfoil had a higher lift-drag ratio under the at-tack angle of -2° to 6°, in which the attack angle was 3° the lift-drag ratio of the new airfoil is about 25% higher than that of the BRUXEL36 airfoil. The research of the thesis provides a new attempt and an important reference for the development of the theory of the interaction between flowing air and wind power blades and the theory of wind blade airfoil profile.