Estimates of tidal stream power that can be extracted from channels are subject to considerable uncertainty of different types. Of these types of uncertainty, we examine the role of bed roughness uncertainty. In the model considered herein (Garrett & Cummins, 2005, Proc. Roy. Soc. A) background friction acts to reduce the flow rate and thus power available for extraction. We introduce uncertainty in the background friction, resulting from both model and parametric uncertainty, into this power model. We then take an asymptotic approach to find leading-order estimates of the effect of bed roughness uncertainty on estimates on extractable power, optimal turbine tuning and the variability of power estimates.
|Title of host publication||Proceedings of 12th European Wave and Tidal Energy Conference, EWTEC17|
|Pages||1174-1 to 1174-9|
|Number of pages||9|
|Publication status||Published - 2017|