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A Study of Noise Generation on the E387, S823, NACA 0012, and NACA 4412 Airfoils for Use on Small-Scale Wind Turbines

[+] Author and Article Information
Kenneth Van Treuren

ASME member, Baylor University, Department of Mechanical Engineering, One Bear Place #97356, Waco, Texas 76798-7356
kenneth_van_treuren@baylor.edu

Andrew Hays

ASME member, Baylor University, Department of Mechanical Engineering, One Bear Place #97356, Waco, Texas 76798-7356
andrew_hays@baylor.edu

1Corresponding author.

ASME doi:10.1115/1.4037310 History: Received December 16, 2016; Revised June 15, 2017

Abstract

Four airfoils typical to small-scale wind turbines were studied for noise generation: Eppler 387, NREL S823, NACA 0012, and NACA 4412. Wind tunnel sound pressure level data were collected directly downstream of the airfoil for angles of attack from -10 to 25 degrees and for Reynolds numbers from 50,000 to 200,000. Vertical and horizontal wake traverses define the extent of the noise generated. The data was analyzed by frequency and compared with a noise prediction from NREL AirFoil Noise. The noise trends found can be applied to improve other airfoil selection when designing small-scale wind turbines.

Copyright (c) 2017 by ASME
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