Optimal Design of Airfoil With Trailing Edge Serration [锯齿尾缘降噪翼型优化设计研究]

作者：Zhao M.-Z.; Cao H.-J.; Zhang M.-M.; Xu J.-Z.

来源：Journal of Engineering Thermophysics, 2022, 43(2): 384-389.

• Aerodynamic performance
• Noise reduction
• Optimal design
• Trailing edge serration
• Wind turbine blade

A large number of studies have shown that the main aerodynamic noise of rotating wind turbine blades comes from the trailing edge of the blade tip, which has been one of the important factors that seriously affect residents' life and the aerodynamic performance of the blades. To this end, a flow control method that imitates the serrated trailing edge of an owl wing is used for the twodimensional airfoil, which affects the aerodynamic characteristics of the blade. The key dimensional parameters of the serrations are integrated into the wind turbine airfoil design, so as to develop an optimal design method for the bionic serrated airfoil and obtain a bionic serrated airfoil with both low noise and high aerodynamic performance. On the premise of maintaining the aerodynamic performance of the original airfoil, the newly developed bionic serrated airfoil reduces aerodynamic noise by 6.4 dB compared with the original wind turbine airfoil, which fully demonstrates the feasibility of the optimal design of the bionic serrated airfoil for noise reduction.

• 单位
  中国科学院大学