energies-13-06167.pdf (4.66 MB)

Wave energy extraction by flexible floaters

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journal contribution
posted on 09.12.2020, 10:57 by Simone Michele, Federica Buriani, Emiliano Renzi, Marijn van Rooij, Bayu Jayawardana, Antonis I Vakis
We present a novel mathematical model to investigate the extraction of wave power by flexible floaters. The model is based on the method of dry modes, coupled with a matched eigenfunction expansion. Our model results compare satisfactorily with preliminary data obtained from a demonstrator device, developed at the University of Groningen. We show that the role of elasticity is to increase the number of resonant frequencies with respect to a rigid body, which has a positive effect on wave power output. The mathematical model is then extended to irregular incident waves, described by a JONSWAP spectrum. Our results show that the peak capture factors decrease in irregular waves, as compared to the monochromatic case. However, the system becomes more efficient at non-resonant frequencies. This work highlights the need to scale-up experimental investigations on flexible wave energy converters, which are still a small minority, compared to those on rigid converters.

Funding

Royal Society – CNR International Fellowship

History

School

  • Science

Department

  • Mathematical Sciences

Published in

Energies

Volume

13

Issue

23

Publisher

MDPI AG

Version

VoR (Version of Record)

Rights holder

© The Authors

Publisher statement

This is an Open Access Article. It is published by MDPI under the Creative Commons Attribution 4.0 International Licence (CC BY 4.0). Full details of this licence are available at: https://creativecommons.org/licenses/by/4.0/

Acceptance date

19/11/2020

Publication date

2020-11-24

Copyright date

2020

ISSN

1996-1073

eISSN

1996-1073

Language

en

Depositor

Dr Emiliano Renzi. Deposit date: 19 November 2020

Article number

6167

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