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- Title
Sound propagation through the wake flow of a hilltop wind turbine—A numerical study.
- Authors
Heimann, Dietrich; Englberger, Antonia; Schady, Arthur
- Abstract
Abstract: The sound propagation from a wind turbine situated on the top of a hill into the downwind domain is studied by numerical simulations for 13 cases with varying hill geometry and inflow conditions. The influence of the hill on the atmospheric flow and the wake due to the rotor are simulated by precursory large‐eddy simulations. In addition to the combined consideration of hill and turbine wake effects, these effects are also separately evaluated. The results show that placing the turbine on top of a hill leads to slightly lower sound levels on the downwind plane, although the wake alone supports downward refraction and tends to increase the sound impact near the ground at greater distance. Variations of the hill geometry and the inflow conditions do not have significant effects on the near‐ground sound levels in the downwind domain.
- Subjects
WIND turbines; REFRACTION (Optics); ACOUSTIC wave propagation; COMPUTER simulation; NUMERICAL analysis
- Publication
Wind Energy, 2018, Vol 21, Issue 8, p650
- ISSN
1095-4244
- Publication type
Article
- DOI
10.1002/we.2185