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Prediction of low frequency and impulsive sound radiation from horizontal axis wind turbines (1981)

Harris, W. L. ; Widnall, S. E. ; Martinez, R.

In: CASI

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Publication Date: 2016-06-07

Description: Theoretical models to predict the radiation of low frequency and impulsive sound from horizontal axis wind turbines due to three sources: (1) steady blade loads; (2) unsteady blade loads due to operation in a ground shear; (3) unsteady loads felt by the blades as they cross the tower wake. These models are then used to predict the acoustic output of MOD-1, the large wind turbine operated near Boone, N.C. Predicted acoustic time signals are compared to those actually measured near MOD-1 and good agreement is obtained.

Keywords: ENERGY PRODUCTION AND CONVERSION

Type: NASA. Lewis Research Center Wind Turbine Dyn.; p 401-409

Format: application/pdf

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