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An investigation into the possible effects of cavitation on a horizontal axis tidal turbine

Byrne, Carlton Barrie Baylis, Cherrett, W., Grosvenor, Roger Ivor, Mason-Jones, Allan, Morris, Ceri E., O'Doherty, Daphne Maria, O'Doherty, Timothy and Prickett, Paul William 2011. An investigation into the possible effects of cavitation on a horizontal axis tidal turbine. Presented at: 9th European Wave and Tidal Energy Conference 2011, Southampton, UK, 5- 9 Sep 2011. Proceedings of the 9th European Wave and Tidal Energy Conference, Southampton, UK, 5th-9th September 2011. Southampton: University of Southampton,

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Abstract

This paper investigates the conditions under which cavitation may affect the operation of horizontal axis tidal turbines. The approach utilises computational fluid dynamics (CFD) to measure the individual and combined influence that operational parameters, including flow velocity, rotor angular velocity, and depth of submersion exert on the operation of a 3 bladed turbine. The approach is based upon the behaviour developed within a CFD model allowing the comparison of the minimum local pressure to fluid vapour pressures. It must be stated that the inception of cavitation may be a complex process. This approach thus assumes that when local fluid pressure drops below the vapour pressure cavitation will ensue. The result of this analysis suggests that, given specific conditions, it is highly likely that tidal turbines will be subject to the effects of cavitation.

Item Type: Conference or Workshop Item (Paper)
Date Type: Publication
Status: Published
Schools: Engineering
Subjects: G Geography. Anthropology. Recreation > GE Environmental Sciences
T Technology > TC Hydraulic engineering. Ocean engineering
Uncontrolled Keywords: Cavitation, Horizontal Axis Tidal Turbine, computational fluid dynamics.
Publisher: University of Southampton
Related URLs:
Last Modified: 04 Jun 2017 04:28
URI: http://orca.cf.ac.uk/id/eprint/39784

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