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Please use this identifier to cite or link to this item: https://dspace.lboro.ac.uk/2134/34027

Title: The pressure impulse of wave slamming on an oscillating wave energy converter
Authors: Renzi, Emiliano
Wei, Yanji
Dias, F.
Issue Date: 2018
Publisher: © Elsevier
Citation: RENZI, E., WEI, Y. and DIAS, F., 2018. The pressure impulse of wave slamming on an oscillating wave energy converter. Journal of Fluids and Structures, 82, pp.258-271.
Abstract: Recent wave tank experiments on a flap-type wave energy converter showed the occurrence of extreme wave loads, corresponding to slamming events in highly energetic seas. In this paper, we analyse pressure-impulse values from available pressure measurements, for a series of experimental slamming tests. Then, we devise a pressure-impulse model of the slamming of a flapping plate, including the effects caused by air entrapment near the plate. Using a double conformal-mapping technique, we map the original domain into a semi-infinite channel, by means of Gauss’ hypergeometric functions. This allows us to express the pressure impulse as a superimposition of orthogonal eigenfunctions in the transformed space. The mathematical model is validated against the experimental data. Parametric analysis shows that the system is much more sensitive to the impact angle than to the initial wetted portion of the flap. Furthermore, the presence of an aerated region determines the pressure-impulse values to increase significantly at all points on the flap surface.
Description: This paper is in closed access until 20th July 2019.
Sponsor: This study was partially supported by Science Foundation Ireland (SFI) under the research project ”High-end Computational Modelling for Wave Energy Systems” (Grant SFI/10/IN.1/12996) in collaboration with Marine Renewable Energy Ireland (MaREI), the SFI Centre for Marine Renewable Energy Research (SFI/12/RC/2302).
Version: Accepted for publication
DOI: 10.1016/j.jfluidstructs.2018.07.007
URI: https://dspace.lboro.ac.uk/2134/34027
Publisher Link: https://doi.org/10.1016/j.jfluidstructs.2018.07.007
ISSN: 1095-8622
Appears in Collections:Closed Access (Maths)

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