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The Effect of Boundary Proximity Upon the Wake Structure of Horizontal Axis Marine Current Turbines
Uppsala University, Disciplinary Domain of Science and Technology, Technology, Department of Engineering Sciences, Electricity.
2011 (English)In: Journal of Offshore Mechanics and Arctic Engineering-Transactions of The Asme, ISSN 0892-7219, E-ISSN 1528-896X, Vol. 134, no 2, 021104-1-021104-8 p.Article in journal (Refereed) Published
Abstract [en]

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 (sea bed 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 modeling approaches may not hold for marine current energy technology and a novel approach is required for simulation of the downstream flow field. Such modeling solutions are discussed and resultant simulation results are given. In addition, the presented work has been conducted as part of a UK Government funded project to develop validated numerical modeling tools which can predict the flow onto a marine current turbine within an array. The work feeds into the marine energy program at Southampton to assist developers with layout designs of arrays which are optimally spaced and arranged to achieve the maximum possible energy yield at a given tidal energy site.

Place, publisher, year, edition, pages
2011. Vol. 134, no 2, 021104-1-021104-8 p.
National Category
Electrical Engineering, Electronic Engineering, Information Engineering
Identifiers
URN: urn:nbn:se:uu:diva-222368DOI: 10.1115/1.4004523OAI: oai:DiVA.org:uu-222368DiVA: diva2:711587
Note

10.1115/1.4004523

Available from: 2014-04-10 Created: 2014-04-10 Last updated: 2017-12-05

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Journal of Offshore Mechanics and Arctic Engineering-Transactions of The Asme
Electrical Engineering, Electronic Engineering, Information Engineering

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