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RESEARCH PAPERS

Predictions of Low-Frequency and Impulsive Sound Radiation From Horizontal-Axis Wind Turbines

[+] Author and Article Information
R. Martinez, S. E. Widnall, W. L. Harris

Massachusetts Institute of Technology, Cambridge, Mass. 02139

J. Sol. Energy Eng 104(2), 124-130 (May 01, 1982) (7 pages) doi:10.1115/1.3266284 History: Received February 01, 1981; Online November 11, 2009

Abstract

This paper develops theoretical models to predict the radiation of low-frequency and impulsive sound from horizontal-axis wind turbines due to three sources: (i) steady blade loads, (ii) unsteady blade loads due to operation in a ground shear, (iii) unsteady loads felt by the blades as they cross the tower wake. These models are then used to predict the acoustic output of MOD-I, the large wind turbine operated near Boone, N. C. Predicted acoustic time signals are compared to those actually measured near MOD-I; good agreement is obtained.

Copyright © 1982 by ASME
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