Optimizing the Shape of Rotor Blades for Maximum Power Extraction in Marine Current Turbines

Esfahani, J.A. and Karbasian, H.R. (2012) Optimizing the Shape of Rotor Blades for Maximum Power Extraction in Marine Current Turbines. International Journal of Automotive and Mechanical Engineering (IJAME), 6 (Jul. pp. 722-729. ISSN 2229-8649 (Print); 2180-1606 (Online). (Published)

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In this paper the shape of rotor blades in Marine Current Turbines (MCTs) are investigated. The evaluation of hydrodynamic loads on blades is performed based on the Blade Element Momentum (BEM) theory. The shape of blades is optimized according to the main parameters in the configuration and operation of these devices. The optimization is conducted based on the ability of the blades to harness the maximum energy during operating. The main parameters investigated are the tip speed ratio and angle of attack. Furthermore, the influence of these parameters on the maximum energy extraction from fluid flow over a hydrofoil is evaluated. It is shown that the effect of the angle of attack on power extraction is greater than that of the tip speed ratio, while both are found to be significant. Additionally, the proper angle of attack is the angle at which the lift to drag ratio is at its maximum value. However, if a proper angle of attack is chosen, the variations in power coefficient would not be effectively changed with small variations in the tip speed ratio.

Item Type: Article
Additional Information: Please click official link
Uncontrolled Keywords: Marine current turbine (MCT), Hydrodynamics, Tidal current flows, Renewable energy, Optimization
Subjects: T Technology > TJ Mechanical engineering and machinery
Faculty/Division: Unspecified
Depositing User: Noorul Farina Arifin
Date Deposited: 27 Feb 2013 03:06
Last Modified: 03 Mar 2015 08:01
URI: http://umpir.ump.edu.my/id/eprint/3500
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