Noise generated by wind turbines is significantly impacted by its propagation in the atmosphere. Hence, for annoyance issues, an accurate prediction of sound propagation is critical to determine noise levels around wind turbines. This study presents a method to predict wind turbine sound propagation based on linearized Euler equations. We compare this approach to the parabolic equation method, which is widely used since it captures the influence of atmospheric refraction, ground reflection, and sound scattering at a low computational cost. Using the linearized Euler equations is more computationally demanding but can reproduce more physical effects as fewer assumptions are made. An additional benefit of the linearized Euler equations is that they provide a time-domain solution. To compare both approaches, we simulate sound propagation in two distinct scenarios. In the first scenario, a wind turbine is situated on flat terrain; in the second, a turbine is situated on a hilltop. The results show that both methods provide similar noise predictions in the two scenarios. We find that while some differences in the propagation results are observed in the second case, the final predictions for a broadband extended source are similar between the two methods.
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September 2023
September 06 2023
Wind turbine sound propagation: Comparison of a linearized Euler equations model with parabolic equation methods
Jules Colas
;
Jules Colas
a)
1
Université de Lyon, Ecole Centrale de Lyon, CNRS, Université Claude Bernard Lyon 1, Institut National des Sciences Appliquées de Lyon (INSA Lyon), Laboratoire de Mécanique des Fluides et d'Acoustique (LMFA), UMR5509
, 69134 Ecully Cedex, France
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Ariane Emmanuelli
;
Ariane Emmanuelli
1
Université de Lyon, Ecole Centrale de Lyon, CNRS, Université Claude Bernard Lyon 1, Institut National des Sciences Appliquées de Lyon (INSA Lyon), Laboratoire de Mécanique des Fluides et d'Acoustique (LMFA), UMR5509
, 69134 Ecully Cedex, France
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Didier Dragna
;
Didier Dragna
1
Université de Lyon, Ecole Centrale de Lyon, CNRS, Université Claude Bernard Lyon 1, Institut National des Sciences Appliquées de Lyon (INSA Lyon), Laboratoire de Mécanique des Fluides et d'Acoustique (LMFA), UMR5509
, 69134 Ecully Cedex, France
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Philippe Blanc-Benon
;
Philippe Blanc-Benon
2
Université de Lyon, CNRS, Ecole Centrale de Lyon, INSA Lyon, Université Claude Bernard Lyon 1, LMFA, UMR5509
, 69134 Ecully Cedex, France
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Benjamin Cotté
;
Benjamin Cotté
3
Institute of Mechanical Sciences and Industrial Applications (IMSIA), ENSTA Paris, CNRS, Commissariat a l'Energie Atomique, Électricité de France, Institut Polytechnique de Paris
, Paris, France
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Richard J. A. M. Stevens
Richard J. A. M. Stevens
4
Physics of Fluids Group, Max Planck Center Twente for Complex Fluid Dynamics, J. M. Burgers Center for Fluid Dynamics, University of Twente
, P.O. Box 217, 7500 AE Enschede, The Netherlands
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a)
Email: jules.colas@ec-lyon.fr
J. Acoust. Soc. Am. 154, 1413–1426 (2023)
Article history
Received:
April 13 2023
Accepted:
August 14 2023
Citation
Jules Colas, Ariane Emmanuelli, Didier Dragna, Philippe Blanc-Benon, Benjamin Cotté, Richard J. A. M. Stevens; Wind turbine sound propagation: Comparison of a linearized Euler equations model with parabolic equation methods. J. Acoust. Soc. Am. 1 September 2023; 154 (3): 1413–1426. https://doi.org/10.1121/10.0020834
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