Wave loads on the foundation of a bottom-hinged modular flap structure

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    Large loads result in expensive foundations which are a substantial proportion of the capital cost of flap-type Wave Energy Converters (WECs). Devices such as Oyster 800, currently deployed at the European Marine Energy Centre (EMEC), comprise a single flap for the full width of the machine. Splitting a flap-type device into smaller vertical flap modules, to make a ‘modular-flap’, might reduce the total foundation loads, whilst still providing acceptable performance in terms of energy conversion.
    This paper investigates the foundation loads of an undamped modular-flap device, comparing them to those for a rigid flap of an equivalent width. Physical modelling in a wave tank is used, with loads recorded using a six degree of freedom (DoF) load cell. Both fatigue and extreme loading analysis was conducted. The rotations of the flaps were also recorded, using a motion-tracking system.
    Original languageEnglish
    Publication statusPublished - Sep 2014
    EventInternational Conference on Offshore Renewable Energy - Glasgow, United Kingdom
    Duration: 15 Sep 201417 Sep 2014


    ConferenceInternational Conference on Offshore Renewable Energy
    CountryUnited Kingdom

      Research areas

    • oscillating wave surge converter, Wave Energy Converter, wave tank, modular flap, Oyster

    ID: 11575358