Preprints
https://doi.org/10.5194/wes-2024-36
https://doi.org/10.5194/wes-2024-36
03 Apr 2024
 | 03 Apr 2024
Status: this preprint is currently under review for the journal WES.

Impact of a Two-Dimensional Steep Hill on Wind Turbine Noise Propagation

Jules Colas, Ariane Emmanuelli, Didier Dragna, Philippe Blanc-Benon, Benjamin Cotté, and Richard J. A. M. Stevens

Abstract. Wind turbine noise propagation in a hilly terrain is studied through numerical simulation in different scenarios. The linearized Euler equations are solved in a moving frame that follows the wavefront, and wind turbine noise is modeled with an extended moving source. We employ large eddy simulations to simulate the flow around the hill and the wind turbine. The sound pressure levels (SPL) obtained for a wind turbine in front of a 2D hill and a wind turbine on a hilltop are compared to a baseline flat case. First, the source height and wind speed strongly influence sound propagation downwind. We find that topography influences the wake shape inducing changes in the sound propagation that drastically modify the SPL downwind. Placing the turbine on the hilltop increases the average sound pressure level and amplitude modulation downwind. For the wind turbine placed upstream of a hill, a strong shielding effect is observed. But, because of the refraction by the wind gradient, levels are comparable with the baseline flat case just after the hill. Thus, considering how terrain topography alters the flow and wind turbine wake is essential to accurately predict wind turbine noise propagation.

Publisher's note: Copernicus Publications remains neutral with regard to jurisdictional claims made in the text, published maps, institutional affiliations, or any other geographical representation in this preprint. The responsibility to include appropriate place names lies with the authors.
Jules Colas, Ariane Emmanuelli, Didier Dragna, Philippe Blanc-Benon, Benjamin Cotté, and Richard J. A. M. Stevens

Status: open (extended)

Comment types: AC – author | RC – referee | CC – community | EC – editor | CEC – chief editor | : Report abuse
  • RC1: 'Comment on wes-2024-36', Anonymous Referee #1, 28 Apr 2024 reply
Jules Colas, Ariane Emmanuelli, Didier Dragna, Philippe Blanc-Benon, Benjamin Cotté, and Richard J. A. M. Stevens
Jules Colas, Ariane Emmanuelli, Didier Dragna, Philippe Blanc-Benon, Benjamin Cotté, and Richard J. A. M. Stevens

Viewed

Total article views: 279 (including HTML, PDF, and XML)
HTML PDF XML Total BibTeX EndNote
241 28 10 279 9 9
  • HTML: 241
  • PDF: 28
  • XML: 10
  • Total: 279
  • BibTeX: 9
  • EndNote: 9
Views and downloads (calculated since 03 Apr 2024)
Cumulative views and downloads (calculated since 03 Apr 2024)

Viewed (geographical distribution)

Total article views: 263 (including HTML, PDF, and XML) Thereof 263 with geography defined and 0 with unknown origin.
Country # Views %
  • 1
1
 
 
 
 
Latest update: 20 May 2024
Download
Short summary
We studied wind turbine noise propagation in a hilly terrain through numerical simulation in different scenarios. The sound pressure levels obtained for a wind turbine in front of a 2D hill and a wind turbine on a hilltop are compared to a baseline flat case. The source height and wind speed strongly influence sound propagation downwind. Topography influences the wake shape inducing changes in the sound propagation that modify the sound pressure level and amplitude modulation downwind.
Altmetrics