TY - JOUR
T1 - Wind turbine sound propagation
T2 - Comparison of a linearized Euler equations model with parabolic equation methods
AU - Colas, J.
AU - Emmanuelli, A.
AU - Dragna, D.
AU - Blanc-Benon, Philippe
AU - Cotté, B.
AU - Stevens, R.J.A.M.
PY - 2023/9/6
Y1 - 2023/9/6
N2 - 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.
AB - 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.
KW - 2024 OA procedure
UR - https://www.webofscience.com/api/gateway?GWVersion=2&SrcApp=utwente-ris&SrcAuth=WosAPI&KeyUT=WOS:001062976000002&DestLinkType=FullRecord&DestApp=WOS
U2 - 10.1121/10.0020834
DO - 10.1121/10.0020834
M3 - Article
C2 - 37672307
SN - 0001-4966
VL - 154
SP - 1413
EP - 1426
JO - The Journal of the Acoustical Society of America
JF - The Journal of the Acoustical Society of America
IS - 3
ER -