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.
|Title of host publication||17th Australasian Fluid Mechanics Conference 2010|
|Number of pages||4|
|Publication status||Published - 1 Dec 2010|
|Event||17th Australasian Fluid Mechanics Conference 2010, 17AFMC - Auckland, New Zealand|
Duration: 5 Dec 2010 → 9 Dec 2010
|Conference||17th Australasian Fluid Mechanics Conference 2010, 17AFMC|
|Period||5/12/10 → 9/12/10|