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http://dx.doi.org/10.7837/kosomes.2011.17.1.075

Optimal Rotor Blade Design for Tidal In-stream Energy  

Yang, Chang-Jo (Division of Marine Engineering Systems, Mokpo National Maritime University)
Publication Information
Journal of the Korean Society of Marine Environment & Safety / v.17, no.1, 2011 , pp. 75-82 More about this Journal
Abstract
Marine current energy is one of the most interesting renewable and clean energy resources that have been less exploited. Especially, Korea has worldwide outstanding tidal current energy resources and it is highly required to develop tidal in-stream energy conversion system in coastal area. The objective of study is to investigate harnessing techniques of tidal current energy and to design the a 100 kW horizontal axis tidal turbine using blade element momentum theory with Prandtl's tip loss factor for optimal design procedures. In addition, Influence of Prandtl's tip loss factor at local blade positions as a function of tip speed ratio was studied, and the analysed results showed that power coefficient of designed rotor blade using NACA 63812 was 0.49 at rated tip speed ratio.
Keywords
Tidal energy conversion system; Horizontal axis tidal turbine; Blade element momentum theory; Prandtl's tip loss; Axial flow induction factor; Tangential flow induction factor;
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