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Analysis of the SEA-OWC-Clam wave energy device - part a: historical development, hydrodynamic and motion response formulations & solutions

Analysis of the SEA-OWC-Clam wave energy device - part a: historical development, hydrodynamic and motion response formulations & solutions
Analysis of the SEA-OWC-Clam wave energy device - part a: historical development, hydrodynamic and motion response formulations & solutions
The SEA-Clam wave energy device has undergone the metamorphic changes presented in the historical development. Each variation leads to more complex hydrodynamic and motion responses. The most recent novel Oscillating Water Column (OWC) form of the device has multiple internal free surfaces, the motions of which are required to predict power take-off once a device specification with structural integrity has been identified. Motion equations for structure and the large number of degrees-of-freedom of the free surfaces modelled as massless plates are derived and presented in a very compact form. This paper also proffers two simpler models consistent with standard offshore engineering calculations. These are investigated within since structural integrity of device requires further refinement; as demonstrated in the companion paper. Quality checks of the hydrodynamic analyses are explained and applied to justify the numerical investigations undertaken. Sea spectra for the possible operational site of South Uist are used to generate motion transfer functions for associated wave frequency range. The peak pitch response of this large annular shaped structure is a main concern regarding survivability. The analyses undertaken reflect conceptual rather than detailed design status of the device.
0960-1481
220-235
Bellamy, Norman W.
e779890d-4d3f-4ff0-8791-39f8ff71ef73
Bucchi, Andrea
9a30ab33-8b04-4bca-ab3a-4e42723f8215
Hearn, Grant
c1b2912b-fe5c-432c-aaa4-39c5eff75178
Bellamy, Norman W.
e779890d-4d3f-4ff0-8791-39f8ff71ef73
Bucchi, Andrea
9a30ab33-8b04-4bca-ab3a-4e42723f8215
Hearn, Grant
c1b2912b-fe5c-432c-aaa4-39c5eff75178

Bellamy, Norman W., Bucchi, Andrea and Hearn, Grant (2016) Analysis of the SEA-OWC-Clam wave energy device - part a: historical development, hydrodynamic and motion response formulations & solutions. Renewable Energy, 88, 220-235. (doi:10.1016/j.renene.2015.11.032).

Record type: Article

Abstract

The SEA-Clam wave energy device has undergone the metamorphic changes presented in the historical development. Each variation leads to more complex hydrodynamic and motion responses. The most recent novel Oscillating Water Column (OWC) form of the device has multiple internal free surfaces, the motions of which are required to predict power take-off once a device specification with structural integrity has been identified. Motion equations for structure and the large number of degrees-of-freedom of the free surfaces modelled as massless plates are derived and presented in a very compact form. This paper also proffers two simpler models consistent with standard offshore engineering calculations. These are investigated within since structural integrity of device requires further refinement; as demonstrated in the companion paper. Quality checks of the hydrodynamic analyses are explained and applied to justify the numerical investigations undertaken. Sea spectra for the possible operational site of South Uist are used to generate motion transfer functions for associated wave frequency range. The peak pitch response of this large annular shaped structure is a main concern regarding survivability. The analyses undertaken reflect conceptual rather than detailed design status of the device.

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Accepted/In Press date: 8 November 2015
e-pub ahead of print date: 5 December 2015
Published date: April 2016
Organisations: Fluid Structure Interactions Group

Identifiers

Local EPrints ID: 399290
URI: https://eprints.soton.ac.uk/id/eprint/399290
ISSN: 0960-1481
PURE UUID: 30e51487-1c8b-49df-8f63-15bed0518f56

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Date deposited: 15 Aug 2016 09:11
Last modified: 17 Jul 2017 18:24

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Contributors

Author: Norman W. Bellamy
Author: Andrea Bucchi
Author: Grant Hearn

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