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Please use this identifier to cite or link to this item: https://dspace.lboro.ac.uk/2134/17134

Title: Motion-resonant modes of large articulated damped oscillators in waves
Authors: Renzi, Emiliano
Dias, F.
Keywords: Fluid-structure interaction
Multiple resonance
Wave energy
Issue Date: 2014
Publisher: © Elsevier Ltd
Citation: RENZI, E. and DIAS, F., 2014. Motion-resonant modes of large articulated damped oscillators in waves. Journal of Fluids and Structures, 49, pp.705-715
Abstract: Using 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.
Description: 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.2014.06.012
Sponsor: This publication has emanated from research conducted with the financial support of Science Foundation Ireland under Grant no. SFI/10/IN.1/I2996.
Version: Accepted for publication
DOI: 10.1016/j.jfluidstructs.2014.06.012
URI: https://dspace.lboro.ac.uk/2134/17134
Publisher Link: http://dx.doi.org/10.1016/j.jfluidstructs.2014.06.012
ISSN: 0889-9746
Appears in Collections:Published Articles (Maths)

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