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Modelling of the WITT wave energy converter

Modelling of the WITT wave energy converter
Modelling of the WITT wave energy converter
The paper describes the theoretical modelling and experimental validation of a novel design of ocean wave energy converter which is comprised of a floating, moored, spherical hull containing a mechanical pendulum arrangement from which power is taken when excited by incident waves. Experimental results are shown to compare favourably with those predicted by the theory. An explicit expression is derived for the capture width of the proposed device in terms of physical and hydrodynamic parameters. This exposes the multiple resonant characteristics of the device which enable it to operate effectively over a broad range of wave periods. The subsequent efficient computations allows a numerical optimisation of the design to be performed over a large space of device parameters and model sea spectrum. The work is focussed towards producing reliable estimates for the power capacity of different sized devices deployed at the EMEC site in Scotland. Predictions compare favourably with existing wave energy converter concepts.
0960-1481
159-174
Crowley, S.
1dd6fd4f-44c7-4b70-b7d8-80ecdd6c7a3b
Porter, R.
95d53060-e45c-47c0-a6f1-747a0e10d68f
Taunton, D.J.
10bfbe83-c4c2-49c6-94c0-2de8098c648c
Wilson, P.A.
8307fa11-5d5e-47f6-9961-9d43767afa00
Crowley, S., Porter, R., Taunton, D.J. and Wilson, P.A. (2018) Modelling of the WITT wave energy converter Renewable Energy, 115, pp. 159-174. (doi:10.1016/j.renene.2017.08.004).

Crowley, S., Porter, R., Taunton, D.J. and Wilson, P.A. (2018) Modelling of the WITT wave energy converter Renewable Energy, 115, pp. 159-174. (doi:10.1016/j.renene.2017.08.004).

Record type: Article

Abstract

The paper describes the theoretical modelling and experimental validation of a novel design of ocean wave energy converter which is comprised of a floating, moored, spherical hull containing a mechanical pendulum arrangement from which power is taken when excited by incident waves. Experimental results are shown to compare favourably with those predicted by the theory. An explicit expression is derived for the capture width of the proposed device in terms of physical and hydrodynamic parameters. This exposes the multiple resonant characteristics of the device which enable it to operate effectively over a broad range of wave periods. The subsequent efficient computations allows a numerical optimisation of the design to be performed over a large space of device parameters and model sea spectrum. The work is focussed towards producing reliable estimates for the power capacity of different sized devices deployed at the EMEC site in Scotland. Predictions compare favourably with existing wave energy converter concepts.

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More information

Submitted date: 23 June 2017
Accepted/In Press date: 3 August 2017
e-pub ahead of print date: 7 August 2017
Published date: 15 January 2018

Identifiers

Local EPrints ID: 414291
URI: http://eprints.soton.ac.uk/id/eprint/414291
ISSN: 0960-1481
PURE UUID: 93621a60-7b67-4a56-9fb3-aa1bc13700c4
ORCID for D.J. Taunton: ORCID iD orcid.org/0000-0002-6865-089X
ORCID for P.A. Wilson: ORCID iD orcid.org/0000-0002-6939-682X

Catalogue record

Date deposited: 25 Sep 2017 16:31
Last modified: 06 Nov 2017 17:31

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