Testing Tidal Turbines - Part 1: Steady Towing Tests vs Tidal Moored Tests

Penny Jeffcoate, Bjoern Elsaesser, Trevor Whittaker, Cuan Boake

    Research output: Contribution to conferencePaper

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    Tidal turbines have been tested extensively at many scales in steady state flow. Testing medium- or full-scale devices in turbulent flow has been less thoroughly examined. The differences between turbine performances in these two different states are needed for testing method verification and numerical model validation. The work in this paper documents the performance of a 1/10 scale turbine in steady state pushing tests and tidal moored tests. The overall performance of the device appears to decrease with turbulent flow, though there is increased data scatter and therefore, reduced uncertainty. At maximum power performance, as velocity increases the mechanical power and electrical power reduction from steady to unsteady flow increases. The drive train conversion efficiency also decreases. This infers that the performance for this turbine design is affected by the presence of turbulent flow.
    Original languageEnglish
    Number of pages9
    Publication statusPublished - 2014
    EventInternational Conference on Offshore Renewable Energy - Glasgow, United Kingdom
    Duration: 15 Sep 201417 Sep 2014


    ConferenceInternational Conference on Offshore Renewable Energy
    CountryUnited Kingdom

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