Basic operational parameters of a horizontal axis marine current turbine


Myers, L.E. and Bahaj, A.S. (2004) Basic operational parameters of a horizontal axis marine current turbine. In, Proceedings of the 8th World Renewable Energy Congress (WREC VIII). World Renewable Energy Congress (WREC-VIII) , Elsevier Science.

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Description/Abstract

A 0.4m diameter horizontal axis Marine Current Turbine (MCT)
was tested in a circulating water channel. The model was designed
to facilitate variable speed operation with full pitching blades to
simulate off design point operational conditions. The power output
was measured over a range of flow speeds from 1.2ms-1 to 2.8 ms-
1. Rotor torque and thrust were calculated using axial momentum
theory.

Experimental results were compared with the output of a
commercial BEM computer package named Bladed supplied by
Garrad Hassan & Partners Ltd. Due to the prevalence of high blade
angles of attack three separate aerofoil post stall equations were
used to give varying levels of predicted power for the model.

Results from the water channel tests indicate that at high blade
angles of attack the power generated was in excess of the most
optimistic predicted values. At blade angles approaching pre-stall
values measured power was in close agreement with predicted
values. Cavitation was observed although appeared to have little
effect upon power production although drivetrain vibration was
noticeable.

This work will facilitate full-scale operational limits to be
quantified for MCTs thus optimising performance of this new
technology.

Item Type: Book Section
ISBNs: 0080444709 (hardback)
9780080444703 (hardback)
Related URLs:
Subjects: V Naval Science > VM Naval architecture. Shipbuilding. Marine engineering
T Technology > TA Engineering (General). Civil engineering (General)
Divisions: University Structure - Pre August 2011 > School of Civil Engineering and the Environment
ePrint ID: 53469
Date Deposited: 28 Jul 2008
Last Modified: 27 Mar 2014 18:36
Publisher: Elsevier Science
URI: http://eprints.soton.ac.uk/id/eprint/53469

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