Volume 37 Issue 9
Sep.  2022
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Article Navigation >  Journal of Aerospace Power  > 2022  >  37(9): 1807-1814
WANG Yong，HAO Nansong，LAI Qingren，et al.Experiment of rod⁃airfoil interaction noise reduction using porous leading edges［J］.Journal of Aerospace Power，2022，37（9）：1807‑1814. doi: 10.13224/j.cnki.jasp.20210313
Citation: WANG Yong，HAO Nansong，LAI Qingren，et al.Experiment of rod⁃airfoil interaction noise reduction using porous leading edges［J］.Journal of Aerospace Power，2022，37（9）：1807‑1814. doi: 10.13224/j.cnki.jasp.20210313
shu

Experiment of rod⁃airfoil interaction noise reduction using porous leading edges

doi: 10.13224/j.cnki.jasp.20210313
  • 1.

    Key Laboratory of Aerodynamic Noise Control，China Aerodynamics Research and Development Center，Mianyang Sichuan 621000，China

  • 2.

    Low Speed Aerodynamics Institute，China Aerodynamics Research and Development Center，Mianyang Sichuan 621000，China

Funds:

 11602290

 PJD20180200

  • Received Date: 2021-06-21
    Abstract

  • A method for rod⁃airfoil interaction noise reduction with a bio⁃inspired porous leading edge structure was proposed，and then verified experimentally in the 0.55 m×0.4 m acoustic wind tunnel.For typical configurations，the effects of porous metal foams in reducing the peak noise and the mid⁃to⁃high frequency noise of the rod⁃airfoil interaction were determined.The detailed acoustic measurements on three porous metal foams with different ppi （pores per inch） values showed that the proposed porous leading edges can reduce the peak value of the rod⁃airfoil interaction noise by up to 4.10 dB and 4.67 dB at the airfoil angle of attack of 0° and 10°，respectively.It can also significantly reduce the mid⁃to⁃high frequency noise on the right side of the peak frequency.The larger the proportion，the smaller the ppi value of the porous materials and the better the overall noise reduction effect.

     

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