| Autor: |
C. E. Pearson, W. R. Graham |
| Přispěvatelé: |
Graham, William [0000-0002-0931-2284], Apollo - University of Cambridge Repository |
| Rok vydání: |
2015 |
| Předmět: |
|
| Zdroj: |
The Journal of the Acoustical Society of America. 137:EL111-EL116 |
| ISSN: |
0001-4966 |
| DOI: |
10.1121/1.4904915 |
| Popis: |
Vertical-axis wind turbines are wind-energy generators suitable for use in urban environments. Their associated noise thus needs to be characterized and understood. As a first step, this work investigates the relative importance of harmonic and broadband contributions via model-scale wind-tunnel experiments. Cross-spectra from a pair of flush-mounted wall microphones exhibit both components, but further analysis shows that the broadband dominates at frequencies corresponding to the audible range in full-scale operation. This observation has detrimental implications for noise-prediction reliability and hence also for acoustic design optimization. |
| Databáze: |
OpenAIRE |
| Externí odkaz: |
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