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Enhancing performance of a horizontal axis tidal turbine using adaptive blades

Record type: Conference or Workshop Item (Paper)

Free stream tidal turbines are a source of growing interest in the marine renewable energy field. Some designs use variable pitch blade control devices in order to maximize the efficiency of the turbines; however these are complex to design, construct and maintain under the severe load conditions sub sea devices experience. Adaptive materials have been used in the wind industry to create bend-twist coupled blades in an effort to bring turbine efficiency ever closer to the Betz limit, and increase annual energy capture. This work encompasses a feasibility study, focusing on hydrodynamic performance calculations, wherein the blade geometry is artificially reconfigured as a function of flow velocity. The pressure distribution over the blade is also analysed. The concept of a passively adaptive tidal turbine blade is shown to increase annual energy capture, reduce blade loading and delay cavitation inception.

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Citation

Nicholls-Lee, Rachel and Turnock, Stephen R. (2007) Enhancing performance of a horizontal axis tidal turbine using adaptive blades In OCEANS 2007 - Europe. Institute of Electrical and Electronics Engineers. 6 pp, pp. 1-6. (doi:10.1109/OCEANSE.2007.4302437).

More information

Published date: 18 June 2007
Venue - Dates: OCEANS 2007 - Europe, 2007-06-18 - 2007-06-21
Keywords: adaptive systems, cavitation, marine, renewable energy, tidal power generation, turbines
Organisations: Fluid Structure Interactions Group

Identifiers

Local EPrints ID: 47124
URI: http://eprints.soton.ac.uk/id/eprint/47124
ISBN: 9781424406357
PURE UUID: 45fcae77-fc05-4962-92c9-3479d3101c3b
ORCID for Stephen R. Turnock: ORCID iD orcid.org/0000-0001-6288-0400

Catalogue record

Date deposited: 02 Oct 2007
Last modified: 17 Jul 2017 15:04

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Contributors

Author: Rachel Nicholls-Lee

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