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http://dx.doi.org/10.3795/KSME-B.2015.39.8.661

Rotor-Blade Shape Design and Power-Performance Analysis for Horizontal-Axis Tidal Turbine Using CFD  

Jung, Ji Hyun (Dept. of Mechanical Engineering, Jeju Nat'l Univ.)
Kim, Bum Suk (Faculty of Wind Energy Engineering, Graduate School, Jeju Nat'l Univ.)
Publication Information
Transactions of the Korean Society of Mechanical Engineers B / v.39, no.8, 2015 , pp. 661-668 More about this Journal
Abstract
We present a design methodology for horizontal-axis tidal turbine blades based on blade element momentum theory, which has been used for aerodynamic design and power-performance analysis in the wind-energy industry. We design a 2-blade-type 1 MW HATT blade, which consists of a single airfoil (S814), and we present the detailed design parameters in this paper. Tidal turbine blades can experience cavitation problems at the blade-tip region, and this should be seriously considered during the early design stage. We perform computational fluid dynamics (CFD) simulations considering the cavitation model to predict the power performance and to investigate the flow characteristics of the blade. The maximum power coefficient is shown to be about 47 under the condition where TSR = 7, and we observed cavitation on the suction and pressure sides of the blade.
Keywords
Horizontal Axis Tidal Turbine; Power Performance; Cavitation; Blade Element Momentum Theory; CFD;
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