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

Yong WANG; Nansong HAO; Qingren LAI; Wenjian LI

doi:10.13224/j.cnki.jasp.20210313

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

Aerothermodynamics and Aeroengine Design | 更新时间：2025-03-14

- Experiment of rod⁃airfoil interaction noise reduction using porous leading edges
- Journal of Aerospace Power Vol. 37, Issue 9, Pages: 1807-1814(2022)
- 作者机构：
  
  1.中国空气动力研究与发展中心气动噪声控制重点实验室，四川绵阳 621000
  2.中国空气动力研究与发展中心低速空气动力研究所，四川绵阳 621000
- 作者简介：
- 基金信息：
- DOI：10.13224/j.cnki.jasp.20210313
  CLC：
- 稿件说明：
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Yong WANG, Nansong HAO, Qingren LAI, et al. Experiment of rod⁃airfoil interaction noise reduction using porous leading edges[J]. Journal of Aerospace Power, 2022, 37(9): 1807-1814.
DOI：

Yong WANG, Nansong HAO, Qingren LAI, 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.

摘要

为了抑制圆柱⁃翼型干涉噪声，提出了仿生多孔前缘结构的降噪措施，并在0.55 m×0.4 m声学风洞中进行了实验验证。针对典型构型，对比确定了多孔金属泡沫降低圆柱⁃翼型干涉峰值噪声和中高频噪声的效果。3种不同ppi（pores per inch）值多孔金属泡沫的详细声学测量结果表明，所提出的多孔前缘结构能在翼型迎角为0°和10°时，分别降低最多4.10 dB和4.67 dB的圆柱⁃翼型干涉峰值噪声，且能明显降低峰值频率右侧的中高频噪声；多孔材料的占比越大、ppi值越小，整体降噪效果越好。

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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references

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