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Numerical investigation of a horizontal axis tidal turbine

Citation

Afshar, O and Henderson, AD and Walker, JM and Wang, X, Numerical investigation of a horizontal axis tidal turbine, Proceedings of the 20th Australasian Fluid Mechanics Conference (AFMC), 05-08 December, Perth, Australia, pp. 1-4. ISBN 978-1-74052-377-6 (2016) [Refereed Conference Paper]


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Copyright Statement

Copyright 2016 Australasian Fluid Mechanics Society

Official URL: http://people.eng.unimelb.edu.au/imarusic/proceedi...

Abstract

Horizontal Axis Tidal Turbines (HATTs) are one of the most promising technologies available for power generation from tidal energy. In this study, the performance of a twin bladed HATT based on a NACA63-618 cross-section was numerically studied using a Reynolds Averaged Navier-Stokes (RANS) solver with k-ω turbulence model. The power and thrust coefficients at different tip speed ratios were calculated and validated using previously published experimental data. Simulation results indicated that the maximum efficiency of the tidal turbine is approximately 40%, occurring at a tip speed ratio of 6. The pressure distribution at three different sections of the blade span was investigated for three values of tip speed ratio. Boundary layer separation is evident on the suction surface towards the root of the blade section at a tip speed ratio of 5. As tip speed ratio is increased to 7, the separation does not occur.

Item Details

Item Type:Refereed Conference Paper
Keywords:tidal energy, computational fluid dynamics, hydrodynamics, marine current turbine
Research Division:Engineering
Research Group:Mechanical Engineering
Research Field:Energy Generation, Conversion and Storage Engineering
Objective Division:Energy
Objective Group:Renewable Energy
Objective Field:Tidal Energy
Author:Afshar, O (Mr Omid Afshar)
Author:Henderson, AD (Dr Alan Henderson)
Author:Walker, JM (Dr Jessica Walker)
Author:Wang, X (Associate Professor Xiaolin Wang)
ID Code:113933
Year Published:2016
Deposited By:Engineering
Deposited On:2017-01-30
Last Modified:2017-03-15
Downloads:2 View Download Statistics

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