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.
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页码：45 / 49
页数：5
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