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Hydrodynamics of the oscillating wave surge converter in the open ocean

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journal contribution
posted on 26.03.2015, 16:25 by Emiliano Renzi, F. Dias
A potential flow model is derived for a large flap-type oscillating wave energy converter in the open ocean. Application of Green’s integral theorem in the fluid domain yields a hypersingular integral equation for the jump in potential across the flap. The solution is found via a series expansion in terms of the Chebyshev polynomials of the second kind and even order. Several relationships are then derived between the hydrodynamic parameters of the system. Comparison is made between the behaviour of the converter in the open ocean and in a channel. The degree of accuracy of wave tank experiments aiming at reproducing the performance of the device in the open ocean is quantified. A parametric analysis of the system is then undertaken. In particular, it is shown that increasing the flap width has the beneficial effect of broadening the bandwidth of the capture factor curve. This phenomenon can be exploited in random seas to achieve high levels of efficiency.

Funding

This study was funded by Science Foundation Ireland (SFI) under the research project “High-end computational modelling for wave energy systems”.

History

School

  • Science

Department

  • Mathematical Sciences

Published in

EUROPEAN JOURNAL OF MECHANICS B-FLUIDS

Volume

41

Pages

1 - 10 (10)

Citation

RENZI, E. and DIAS, F., 2013. Hydrodynamics of the oscillating wave surge converter in the open ocean. European Journal of Mechanics-B/Fluids, 41, pp. 1 - 10.

Publisher

© Elsevier Masson SAS

Version

AM (Accepted Manuscript)

Publisher statement

This work is made available according to the conditions of the Creative Commons Attribution-NonCommercial-NoDerivatives 4.0 International (CC BY-NC-ND 4.0) licence. Full details of this licence are available at: https://creativecommons.org/licenses/by-nc-nd/4.0/

Publication date

2013

Notes

NOTICE: this is the author’s version of a work that was accepted for publication in European Journal of Mechanics-B/Fluids. Changes resulting from the publishing process, such as peer review, editing, corrections, structural formatting, and other quality control mechanisms may not be reflected in this document. Changes may have been made to this work since it was submitted for publication. A definitive version was subsequently published in European Journal of Mechanics-B/Fluids, vol 41, September-October 2013, DOI: 10.1016/j.euromechflu.2013.01.007

ISSN

0997-7546

Language

en

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