Development and validation of Fluid Structure Interaction Methods for an Oscillating Wave Surge Converter

Christian Windt, Pal Schmitt, Jonathan Nicholson, Bjoern Elsaesser

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Abstract

The term fatigue loads on the Oyster Oscillating Wave Surge Converter (OWSC) is used to describe hydrostatic loads due to water surface elevation with quasi-static changes of state. Therefore a procedure to implement hydrostatic pressure distributions into finite element analysis of the structure is desired. Currently available experimental methods enable one to measure time variant water surface elevation at discrete locations either on or around the body of the scale model during tank tests. This paper discusses the development of a finite element analysis procedure to implement time variant, spatially distributed hydrostatic pressure derived from discretely measured water surface elevation. The developed method can process differently resolved (temporal and spatial) input data and approximate the elevation over the flap faces with user defined properties. The structural loads, namely the forces and moments on the body can then be investigated by post processing the numerical results. This method offers the possibility to process surface elevation or hydrostatic pressure data from computational fluid dynamics simulations and can thus be seen as a first step to a fluid-structure interaction model.
Original languageEnglish
Number of pages7
Publication statusPublished - 25 Nov 2014
EventInternational Conference on Renewable Energies Offshore - Congress Center Instituto Superior Técnico Lisboa Portugal, Lisbon, Portugal
Duration: 24 Nov 201426 Nov 2014

Conference

ConferenceInternational Conference on Renewable Energies Offshore
CountryPortugal
CityLisbon
Period24/11/201426/11/2014

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