Renzi_Dias_JFS_2014.pdf (2.02 MB)
Motion-resonant modes of large articulated damped oscillators in waves
journal contribution
posted on 2015-03-26, 16:59 authored by Emiliano Renzi, F. DiasUsing a semi-analytical approach, we show that an articulated system of large damped oscillators in the open ocean can be resonated by incoming waves at multiple frequencies. As an application, energy extraction from the system is modelled when the oscillators are used as flap-type wave energy converters. A new parameter – the absorption efficiency – is introduced to analyse the performance of the system at resonance. This allows us to identify the occurrence of detrimental processes near the resonant frequencies, which reduce the sustainability of the energy conversion process. This result challenges the diffused belief that large flap-type wave energy converters must be designed to resonate, which is based on the use of inappropriate performance descriptors.
Funding
This publication has emanated from research conducted with the financial support of Science Foundation Ireland under Grant no. SFI/10/IN.1/I2996.
History
School
- Science
Department
- Mathematical Sciences
Published in
JOURNAL OF FLUIDS AND STRUCTURESVolume
49Pages
705 - 715 (11)Citation
RENZI, E. and DIAS, F., 2014. Motion-resonant modes of large articulated damped oscillators in waves. Journal of Fluids and Structures, 49, pp.705-715Publisher
© Elsevier LtdVersion
- 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
2014Notes
This paper was accepted for publication in the Journal of Fluids and Structures. The definitive published version is available at: http://dx.doi.org/10.1016/j.jfluidstructs.2014.06.012ISSN
0889-9746Publisher version
Language
- en