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Applied Mathematics and Mechanics (English Edition) ›› 2011, Vol. 32 ›› Issue (6): 765-776.doi: https://doi.org/10.1007/s10483-011-1456-7

• Articles • 上一篇    下一篇

Experimental and numerical investigation on sound generation from airfoil-flow interaction

江旻 李晓东 周家检   

  1. School of Jet Propulsion, Beihang University, Beijing 100191, P. R. China
  • 收稿日期:2011-02-21 修回日期:2011-04-20 出版日期:2011-06-01 发布日期:2011-06-01
  • 基金资助:

    Project supported by theNational Basic Research Program of China (973 Program) (No. 2007CB714604)

Experimental and numerical investigation on sound generation from airfoil-flow interaction

 JIANG Min, LI Xiao-Dong, ZHOU Jia-Jian   

  1. School of Jet Propulsion, Beihang University, Beijing 100191, P. R. China
  • Received:2011-02-21 Revised:2011-04-20 Online:2011-06-01 Published:2011-06-01
  • Supported by:

    Project supported by theNational Basic Research Program of China (973 Program) (No. 2007CB714604)

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624

被引次数

10

摘要： Aerodynamic noise due to interaction between incoming turbulence and rotating blades is an important component in the wind turbine noise. The rod-airfoil configuration is used to investigate the interactive phenomenon experimentally and numerically. Distribution of unsteady pressure on the airfoil surface is measured for different rod positions and airfoil attack angles. Two National Advisory Committee for Aeronatics (NACA) airfoils, NACA0012 and NACA0018, and two wind turbine airfoils, S809 and S825 are investigated. In addition, for low angles of attack, the flow field around the airfoil’s leading edge is investigated with the particle image velocimetry (PIV). The experimental results indicate that unsteady pressure disturbances on the airfoil surface are related to the rod vortex shedding. Meanwhile, the interaction flow field of the rod and NACA0012 airfoil is simulated with the unsteady Reynolds averaged Navier-Stokes method (URANS), and the obtained pressure spectra are compared with the experimental results.

Abstract: Aerodynamic noise due to interaction between incoming turbulence and rotating blades is an important component in the wind turbine noise. The rod-airfoil configuration is used to investigate the interactive phenomenon experimentally and numerically. Distribution of unsteady pressure on the airfoil surface is measured for different rod positions and airfoil attack angles. Two National Advisory Committee for Aeronatics (NACA) airfoils, NACA0012 and NACA0018, and two wind turbine airfoils, S809 and S825 are investigated. In addition, for low angles of attack, the flow field around the airfoil’s leading edge is investigated with the particle image velocimetry (PIV). The experimental results indicate that unsteady pressure disturbances on the airfoil surface are related to the rod vortex shedding. Meanwhile, the interaction flow field of the rod and NACA0012 airfoil is simulated with the unsteady Reynolds averaged Navier-Stokes method (URANS), and the obtained pressure spectra are compared with the experimental results.

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