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The downstream wake response of marine current energy converters operating in shallow tidal flows

The downstream wake response of marine current energy converters operating in shallow tidal flows
The downstream wake response of marine current energy converters operating in shallow tidal flows
This paper presents findings from an experimental study investigating the downstream wake response from marine current energy convertors operating in various degrees of vertical flow constraint. The paper investigates deep vertically unconstrained sites, mid-depth sites and there is a particular emphasis on shallow tidal stream sites. Shallow tidal resources could be utilised for the deployment of first generation farms. The nature of the downstream wake flow will be a critical factor when determining the farm layout and the wake length is heavily influenced by the flow depth or ratio of rotor diameter to flow depth. A porous actuator disk is used to model the marine current energy convertor and an Acoustic Doppler Velocimeter is used to map the downstream wake. Linear scaling of length ratios suggests mid depth sites of 30-50m will produce the shortest wake lengths and for deeper and shallower sites the wake length increases. It is hoped that these relationships between vertical flow constraint and wake length will help with the layout design of tidal stream farms
2270-2277
Linköping University
Giles, J.W.
154b185f-ea4c-4f40-8140-598e40f13eca
Myers, L.E.
b0462700-3740-4f03-a336-dc5dd1969228
Bahaj, A.S.
a64074cc-2b6e-43df-adac-a8437e7f1b37
Shelmerdine, R.
d700ba74-92bd-4b0c-89aa-b3a4e4d936a3
Giles, J.W.
154b185f-ea4c-4f40-8140-598e40f13eca
Myers, L.E.
b0462700-3740-4f03-a336-dc5dd1969228
Bahaj, A.S.
a64074cc-2b6e-43df-adac-a8437e7f1b37
Shelmerdine, R.
d700ba74-92bd-4b0c-89aa-b3a4e4d936a3

Giles, J.W., Myers, L.E., Bahaj, A.S. and Shelmerdine, R. (2011) The downstream wake response of marine current energy converters operating in shallow tidal flows. In Proceedings of the World Renewable Energy Congress. Linköping University. pp. 2270-2277 .

Record type: Conference or Workshop Item (Paper)

Abstract

This paper presents findings from an experimental study investigating the downstream wake response from marine current energy convertors operating in various degrees of vertical flow constraint. The paper investigates deep vertically unconstrained sites, mid-depth sites and there is a particular emphasis on shallow tidal stream sites. Shallow tidal resources could be utilised for the deployment of first generation farms. The nature of the downstream wake flow will be a critical factor when determining the farm layout and the wake length is heavily influenced by the flow depth or ratio of rotor diameter to flow depth. A porous actuator disk is used to model the marine current energy convertor and an Acoustic Doppler Velocimeter is used to map the downstream wake. Linear scaling of length ratios suggests mid depth sites of 30-50m will produce the shortest wake lengths and for deeper and shallower sites the wake length increases. It is hoped that these relationships between vertical flow constraint and wake length will help with the layout design of tidal stream farms

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WREC2011-Giles_Myers_Bahaj_preprint_version.pdf - Author's Original
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More information

Published date: 2011
Venue - Dates: World Renewable Energy Congress, Linköping, Sweden, 2011-05-07 - 2011-05-12
Organisations: Energy & Climate Change Group

Identifiers

Local EPrints ID: 334180
URI: http://eprints.soton.ac.uk/id/eprint/334180
PURE UUID: 9fcf8ed7-9568-4541-99c1-6f5f3f601ab6
ORCID for L.E. Myers: ORCID iD orcid.org/0000-0002-4724-899X
ORCID for A.S. Bahaj: ORCID iD orcid.org/0000-0002-0043-6045

Catalogue record

Date deposited: 08 Mar 2012 15:26
Last modified: 01 Oct 2020 01:34

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Contributors

Author: J.W. Giles
Author: L.E. Myers ORCID iD
Author: A.S. Bahaj ORCID iD
Author: R. Shelmerdine

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