The role of onset turbulence on tidal turbine blade loads

I. A. Milne, R. N. Sharma, R. G.J. Flay, S. Bickerton

Research output: Chapter in Book/Conference paperConference paper

15 Citations (Scopus)

Abstract

This paper uses a simulation-based approach to investigate the sensitivity of the blade loads for a horizontal-axis tidal turbine to the structure of the turbulent onset flow. The longitudinal turbulence intensity is shown to be the most dominant parameter of those considered. The rotational sampling effects are similar for the two length-scales analysed, however the number of large amplitude, fatigue loading cycles is influenced by the integral length-scale. The predicted extreme and fatigue loads are similar between the von Kármán and Kaimal spectral models. The findings will be of interest to tidal turbine designers for assessing the long-term structural performance of their turbine blades, given the turbulence characteristics at their site.

Original languageEnglish
Title of host publication17th Australasian Fluid Mechanics Conference 2010
Pages444-447
Number of pages4
Publication statusPublished - 1 Dec 2010
Externally publishedYes
Event17th Australasian Fluid Mechanics Conference 2010, 17AFMC - Auckland, New Zealand
Duration: 5 Dec 20109 Dec 2010

Conference

Conference17th Australasian Fluid Mechanics Conference 2010, 17AFMC
CountryNew Zealand
CityAuckland
Period5/12/109/12/10

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Milne, I. A., Sharma, R. N., Flay, R. G. J., & Bickerton, S. (2010). The role of onset turbulence on tidal turbine blade loads. In 17th Australasian Fluid Mechanics Conference 2010 (pp. 444-447)