An Experimental Investigation of Wall-Mounted Finite Airfoil Turbulent Boundary Layer Noise

被引：0

作者：

Moreau, D. J. ^{[1
]}

Doolan, C. J. ^{[1
]}

Alexander, W. N. ^{[2
]}

Meyers, T. W. ^{[2
]}

Devenport, W. J. ^{[2
]}

机构：

[1] UNSW, Sch Mech & Mfg Engn, Sydney, NSW 2052, Australia

[2] Virginia Tech, Aerosp & Ocean Engn, Blacksburg, VA 24061 USA

来源：

FLUID-STRUCTURE-SOUND INTERACTIONS AND CONTROL | 2016年

关键词：

Airfoil noise; Trailing edge noise; Tip noise; Beamforming;

D O I：

10.1007/978-3-662-48868-3_7

中图分类号：

O42 [声学];

学科分类号：

070206 ; 082403 ;

摘要：

Measurements of flow-induced wall-mounted finite airfoil noise have been taken in the Stability Wind Tunnel at Virginia Tech to examine the influence of airfoil three-dimensionality on noise production. The airfoil has an aspect ratio (ratio of airfoil span, L, to chord, C) of L/C = 3 and measurements encompass variations in geometric angle of attack of alpha = 0 to 12 degrees at a Reynolds number of Re-c = 1.6 x 10(6) (based on chord). The results include far-field acoustic spectra and sound maps taken with a microphone array and reveal contributions of flow at the airfoil tip and wall junction to noise production.

引用

页码：45 / 49

页数：5

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