Experimental study of the turbulence intensity effects on marine current turbines behaviour. Part I: One single turbine

Experimental study of the turbulence intensity effects on marine current turbines behaviour. Part... 1 Introduction</h5> The ambient turbulence intensity in the upstream flow plays a decisive role in the behaviour of horizontal axis marine current turbines. First, turbulence intensity may influence the turbine performances but, probably most important, it deeply influences the wake shape. This last issue is of crucial matter for the onset of marine current turbine arrays. Indeed, in second generation arrays, the wake of an upstream turbine may irreparably affect the power performances of another turbine positioned downstream. This aspect of elementary interactions between marine current turbines in an array will be treated in the second part of this study [1] . The present paper aims at characterising precisely the performances and wake of a single turbine depending on the ambient turbulence intensity of the incoming flow. The results of this first part will represent a strong basis for comparisons with the twin turbines setups investigated in the second part.</P>Several in situ studies were carried out to characterise the turbulence intensity in potential sites, where marine current turbines are expected to be installed. These studies are extremely difficult to undertake owing to their important cost, the possible harsh metocean conditions encountered, as well as the high quality measurement http://www.deepdyve.com/assets/images/DeepDyve-Logo-lg.png Renewable Energy Elsevier

Experimental study of the turbulence intensity effects on marine current turbines behaviour. Part I: One single turbine

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Publisher
Elsevier
Copyright
Copyright © 2014 Elsevier Ltd
ISSN
0960-1481
eISSN
1879-0682
D.O.I.
10.1016/j.renene.2013.12.036
Publisher site
See Article on Publisher Site

Abstract

1 Introduction</h5> The ambient turbulence intensity in the upstream flow plays a decisive role in the behaviour of horizontal axis marine current turbines. First, turbulence intensity may influence the turbine performances but, probably most important, it deeply influences the wake shape. This last issue is of crucial matter for the onset of marine current turbine arrays. Indeed, in second generation arrays, the wake of an upstream turbine may irreparably affect the power performances of another turbine positioned downstream. This aspect of elementary interactions between marine current turbines in an array will be treated in the second part of this study [1] . The present paper aims at characterising precisely the performances and wake of a single turbine depending on the ambient turbulence intensity of the incoming flow. The results of this first part will represent a strong basis for comparisons with the twin turbines setups investigated in the second part.</P>Several in situ studies were carried out to characterise the turbulence intensity in potential sites, where marine current turbines are expected to be installed. These studies are extremely difficult to undertake owing to their important cost, the possible harsh metocean conditions encountered, as well as the high quality measurement

Journal

Renewable EnergyElsevier

Published: Jun 1, 2014

References

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