Abstract
An application of Rapid Distortion of Turbulence (RDT) Theory to turbulence incident on a Horizontal Axis Tidal Turbine rotor is presented. Results are presented using two approaches, one for the case when the turbulence length scale is assumed to be small compared to the rotor diameter and, another when it is comparable or larger than it and which uses a wavenumber method. It is shown that distortion by the mean flow field of the rotor can lead to appreciable intensification of the streamwise turbulent velocity to which the unsteady blade
loading and therefore fatigue is sensitive. Results of some of the analysis of the experimental turbulence data obtained from the tidal stream through the Sound of Islay are also presented to provide an assessment of typical intensities, spectra and lengthscales of the turbulence in this channel in order to estimate the magnitude of the turbulence distortion effect for a typical size of
turbine and operating condition.
loading and therefore fatigue is sensitive. Results of some of the analysis of the experimental turbulence data obtained from the tidal stream through the Sound of Islay are also presented to provide an assessment of typical intensities, spectra and lengthscales of the turbulence in this channel in order to estimate the magnitude of the turbulence distortion effect for a typical size of
turbine and operating condition.
| Original language | English |
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| Title of host publication | Proceedings of the 12th European Wave and Tidal Energy Conference (ETWEC2017) |
| Pages | 693-1-693-6 |
| Publication status | Published - 2018 |
| Event | 12th European Wave and Tidal Energy Conference - Cork, Ireland, United Kingdom Duration: 27 Aug 2017 → 1 Sept 2017 http://www.ewtec.org/ewtec-2017/ |
Conference
| Conference | 12th European Wave and Tidal Energy Conference |
|---|---|
| Country/Territory | United Kingdom |
| City | Cork, Ireland |
| Period | 27/08/17 → 1/09/17 |
| Internet address |