Mathematical modelling of the WITT wave energy converter

Sarah H Crowley, Richard Porter

Research output: Chapter in Book/Report/Conference proceedingConference Contribution (Conference Proceeding)

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The WITT (see is a mechanical device for converting motion into electrical energy. It is comprised of a heavy compound pendulum connected through a gearbox in such a way that its rotary motion about either of two perpendicular horizontal axes is transferred to a single unidirectional output from which the energy of motion can subsequently be harvested.

This paper outlines some of the work being carried out at Bristol University in developing a mathematical model which can be used to assess the feasibility of using a WITT housed within a sealed hull in the ocean to convert ocean wave energy into electrical energy. The idea of using a mechanical device with counterweights inside a sealed hull to absorb wave energy is not new, for example the SEAREV (see, Cordonnier et al. (2015)) and the Wello (see, use a similar principle.

The analysis that follows is novel, but similarities can be seen with a previous study of a fully submerged, horizontal cylindrical wave energy converter (WEC) constrained to move in pitch and surge with an internal pendulum (assumed to operate in a similar manner to the WITT), previously studied in Crowley, Porter & Evans (2013).
Original languageEnglish
Title of host publicationProceedings of the 31st International Workshop on Water Waves and Floating Bodies
EditorsRobert F Beck, Kevin J Maki
PublisherInternational Workshop on Water Waves and Floating Bodies (IWWWFB)
Number of pages4
ISBN (Print)9781607853817
Publication statusPublished - 16 Mar 2016
Event31st International Workshop on Water Waves and Floating Bodies - Plymouth, MI, United States
Duration: 3 Apr 20166 Apr 2016


Conference31st International Workshop on Water Waves and Floating Bodies
Country/TerritoryUnited States
CityPlymouth, MI


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