The prediction of broadband noise from wind turbines
This paper describes a broadband noise prediction scheme for wind turbines. The source mechanisms included in the method are unsteady lift noise, unsteady thickness noise, trailing edge noise and the noise from separated flow. Special methods have been developed to model the inflow turbulence from t...
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| Veröffentlicht in: | Journal of sound and vibration 1987-10, Vol.118 (2), p.217-239 |
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| container_title | Journal of sound and vibration |
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| creator | Glegg, S.A.L. Baxter, S.M. Glendinning, A.G. |
| description | This paper describes a broadband noise prediction scheme for wind turbines. The source mechanisms included in the method are unsteady lift noise, unsteady thickness noise, trailing edge noise and the noise from separated flow. Special methods have been developed to model the inflow turbulence from the atmospheric boundary layer and acoustic radiation to the geometric near field of the rotor. Predictions are compared with measurements on 20 m and 80 m diameter wind turbines. The results show that the turbulence length scale in the atmospheric boundary layer is too large to give the measured noise levels. Very good agreement is obtained between predictions and measurements if the turbulence length scale is taken to be equal to the blade chord. |
| doi_str_mv | 10.1016/0022-460X(87)90522-0 |
| format | Article |
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| ispartof | Journal of sound and vibration, 1987-10, Vol.118 (2), p.217-239 |
| issn | 0022-460X 1095-8568 |
| language | eng |
| recordid | cdi_proquest_miscellaneous_24630517 |
| source | ScienceDirect Journals (5 years ago - present) |
| subjects | Acoustics Exact sciences and technology Fundamental areas of phenomenology (including applications) Noise: its effects and control Physics |
| title | The prediction of broadband noise from wind turbines |
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