Experimental analysis of the local flow effects around single row tidal turbine arrays


Daly, T., Myers, L.E. and Bahaj, A.S. (2010) Experimental analysis of the local flow effects around single row tidal turbine arrays. In, Third International Conference and Exhibition on Ocean Energy, Bilbao, ES, 06 - 08 Oct 2010.

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Description/Abstract

Within the next decade it is likely that largescale energy extraction of tidal energy at specific sites will be undertaken. Arrays of multiple devices will be installed in order to generate meaningful quantities of power to the electrical grid. Much research has now begun to focus on understanding of the effects tidal turbines have on the surrounding flow environment. This will ensure that tidal farms can be strategically positioned to achieve the maximum possible power output in any given tidal site. The objective of the analysis presented in this paper is to investigate the flow acceleration effects which occur in a tidal channel as the position of a tidal array is altered relative to the side channel boundary. Experiments involving porous actuator fences in a circulating water channel are described, and the data from these experiments is used to illustrate how the flow regime can change as a tidal array moves closer to a solid boundary. Results indicate that considerable flow acceleration can occur in certain circumstances which for full-scale arrays could affect sediment transport and marine flora and fauna. Thus arrays must be carefully located to minimise any negative impacts on the surrounding environment. This work is ongoing and aspires to shape the development of larger arrays in the medium to long term

Item Type: Conference or Workshop Item (Paper)
Related URLs:
Subjects: G Geography. Anthropology. Recreation > GE Environmental Sciences
T Technology > TD Environmental technology. Sanitary engineering
Divisions: Faculty of Engineering and the Environment > Civil, Maritime and Environmental Engineering and Science > Energy & Climate Change Group
ePrint ID: 333946
Date Deposited: 08 Mar 2012 11:38
Last Modified: 27 Mar 2014 20:19
URI: http://eprints.soton.ac.uk/id/eprint/333946

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