Wind Tunnel Aeroacoustic Tests of Six Airfoils for Use on Small Wind Turbines*-Reference-Cited by-同舟云学术

Wind Tunnel Aeroacoustic Tests of Six Airfoils for Use on Small Wind Turbines*

Published:2004-11-01 Issue:4 Volume:126 Page:974-985
ISSN:0199-6231
Container-title:Journal of Solar Energy Engineering
language:en
Short-container-title:

Author:

Migliore Paul¹,Oerlemans Stefan²

Affiliation:

1. National Renewable Energy Laboratory, National Wind Technology Center, 1617 Cole Boulevard, Golden, Colorado 80401

2. National Aerospace Laboratory NLR, Department of Aeroacoustics, P.O. Box 153, 8300 AD Emmeloord, The Netherlands

Abstract

Aeroacoustic tests of seven airfoils were performed in an open jet anechoic wind tunnel. Six of the airfoils are candidates for use on small wind turbines operating at low Reynolds numbers. One airfoil was tested for comparison to benchmark data. Tests were conducted with and without boundary layer tripping. In some cases, a turbulence grid was placed upstream in the test section to investigate inflow turbulence noise. An array of 48 microphones was used to locate noise sources and separate airfoil noise from extraneous tunnel noise. Trailing-edge noise was dominant for all airfoils in clean tunnel flow. With the boundary layer untripped, several airfoils exhibited pure tones that disappeared after proper tripping was applied. In the presence of inflow turbulence, leading-edge noise was dominant for all airfoils.

Publisher

ASME International

Subject

Energy Engineering and Power Technology,Renewable Energy, Sustainability and the Environment

Link

http://asmedigitalcollection.asme.org/solarenergyengineering/article-pdf/126/4/974/5627089/974_1.pdf

Reference14 articles.

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2. Oerlemans, S., 2004, Wind Tunnel Aeroacoustic Tests of Six Airfoils for Use on Small Wind Turbines, NREL SR-500-35339.

3. Moriarty, P., and Migliore, P., 2003, Semi-empirical Aeroacoustic Noise Prediction Code for Wind Turbines, NREL TP-500-34478.

4. Wagner, S., Bareiß, R., and Guidati, G., 1996, Wind Turbine Noise, Springer-Verlag, Berlin, pp. 14–21.

5. Hagg, F., Dassen, A., Parchen, R., and Bruggeman, J., 1996, Influence of the Airfoil Shape and Thickness on the Emission of Turbulence Inflow Noise as Measured in the Wind Tunnel, 1996 European Wind Energy Conference, Go¨teborg, Sweden.

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