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The effect of boundary proximity upon the wake structure of horizontal axis marine current turbines

Myers, L.E. and Bahaj, A.S. (2008) The effect of boundary proximity upon the wake structure of horizontal axis marine current turbines At 27th International Conference on Offshore Mechanics and Arctic Engineering (OMAE 2008). 16 - 21 Jun 2008.

Record type: Conference or Workshop Item (Paper)

Abstract

An experimental and theoretical investigation of the flow field around small-scale mesh disk rotor simulators is presented. The downstream wake flow field of the rotor simulators has been observed and measured in the 21m tilting flume at the Chilworth hydraulics laboratory, University of Southampton. The focus of this work is the proximity of flow boundaries (seabed and surface) to the rotor disks and the constrained nature of the flow. A three-dimensional Eddy-viscosity numerical model based on an established wind turbine wake model has been modified to account for the change in fluid and the presence of a bounding free surface. This work has shown that previous axi-symmetric modelling approaches may not hold for marine current energy technology and a novel approach is required for simulation of the downstream flow field. Such modelling solutions are discussed and resultant simulation results are given.
This work has been conducted as part of a BERR-funded project to develop a numerical modelling tool which can predict the flow onto a marine current turbine within an array. The work presented in this paper feeds into this project and will eventually assist the layout design of arrays which are optimally spaced and arranged to achieve the maximum possible energy yield at a given tidal energy site.

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More information

Published date: 2008
Venue - Dates: 27th International Conference on Offshore Mechanics and Arctic Engineering (OMAE 2008), 2008-06-16 - 2008-06-21

Identifiers

Local EPrints ID: 52810
URI: http://eprints.soton.ac.uk/id/eprint/52810
PURE UUID: bd731eb9-ab1f-42e4-9193-cd8488ea9b23
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: 26 Aug 2008
Last modified: 17 Jul 2017 14:39

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