Experimental characterization of vertical-axis wind turbine noise
Journal of the Acoustical Society of America
AIP Publishing on behalf of the Acoustical Society of America
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Pearson, C., & Graham, W. (2014). Experimental characterization of vertical-axis wind turbine noise. Journal of the Acoustical Society of America, 137 (EL111)https://doi.org/10.1121/1.4904915
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.
The first author thanks the UK Engineering and Physical Sciences Research Council for a Doctoral Training Grant.
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External DOI: https://doi.org/10.1121/1.4904915
This record's URL: https://www.repository.cam.ac.uk/handle/1810/247731