A semiempirical acoustic generation model based on the work of Brooks, Pope, and Marcolini [NASA Reference Publication 1218 (1989)] has been developed to predict aerodynamic noise from wind turbines. The model consists of dividing the blades of the wind turbine into two-dimensional airfoil sections and predicting the total noise emission as the sum of the contribution from each blade element. Input is the local relative velocities and boundary layer parameters. These quantities are obtained by combining the model with a Blade Element Momentum (BEM) technique to predict local inflow characteristics to the blades. Boundary layer characteristics are determined from two-dimensional computations of airfoils. The model is applied to the Bonus 300 kW wind turbine at a wind speed of 8 m/s. Comparisons of total noise spectra show good agreement with experimental data.
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November 2005
Research Papers
Modeling of Aerodynamically Generated Noise From Wind Turbines
Jens Nørkær Sørensen
Jens Nørkær Sørensen
(+45) 4525 4334
Dept. of Mechanical Engineering, Fluid Mechanics Section, Building 403,
Technical University of Denmark
, DK-2800 Lyngby, Denmark
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Jens Nørkær Sørensen
(+45) 4525 4334
Dept. of Mechanical Engineering, Fluid Mechanics Section, Building 403,
Technical University of Denmark
, DK-2800 Lyngby, DenmarkJ. Sol. Energy Eng. Nov 2005, 127(4): 517-528 (12 pages)
Published Online: June 9, 2005
Article history
Received:
September 10, 2004
Revised:
June 8, 2005
Accepted:
June 9, 2005
Citation
Zhu, W. J., Heilskov, N., Shen, W. Z., and Sørensen, J. N. (June 9, 2005). "Modeling of Aerodynamically Generated Noise From Wind Turbines." ASME. J. Sol. Energy Eng. November 2005; 127(4): 517–528. https://doi.org/10.1115/1.2035700
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