Conference paper
Analysis of Log-amplitude Saturation of Noise Emission from a Loudspeaker in a Wind Turbine Nacelle
Airfoil and Rotor Design, Wind Turbine Design Division, Department of Wind Energy, Technical University of Denmark1
Department of Wind Energy, Technical University of Denmark2
Aero- and Fluid Dynamics, Wind Turbine Design Division, Department of Wind Energy, Technical University of Denmark3
Testing and Calibration, Wind Turbine Design Division, Department of Wind Energy, Technical University of Denmark4
Measurement Systems and Methods, Wind Turbine Design Division, Department of Wind Energy, Technical University of Denmark5
FORCE Technology6
This work is concerned with the analysis of log-amplitude fluctuations, and their saturation at large distances, using loudspeaker broadband noise emissions. An experiment is conducted outdoor with a loudspeaker on a wind turbine nacelle at 109m height and a row of microphones extends up to 1278m from the loudspeaker.
The measured saturation length presents a similar trend than a theoretical result for tonal noise and spherical waves, but there are large quantitative discrepancies.
| Language: | English |
|---|---|
| Year: | 2021 |
| Proceedings: | Forum Acusticum 2020 |
| Types: | Conference paper |
| ORCIDs: | Bertagnolio, F. , Fischer, A. , Shen, W.Z. and Vignaroli, A. |
