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http://dx.doi.org/10.5574/KSOE.2013.27.3.067

Flow-Turbine Interaction CFD Analysis for Performance Evaluation of Vertical Axis Tidal Current Turbines (I)  

Yi, Jin-Hak (Coastal Development and Ocean Energy Research Division, Korea Institute of Ocean Science and Technology)
Oh, Sang-Ho (Coastal Development and Ocean Energy Research Division, Korea Institute of Ocean Science and Technology)
Park, Jin-Soon (Coastal Development and Ocean Energy Research Division, Korea Institute of Ocean Science and Technology)
Lee, Kwang-Soo (Coastal Development and Ocean Energy Research Division, Korea Institute of Ocean Science and Technology)
Lee, Sang-Yeol (LeeWoos Co. Ltd.)
Publication Information
Journal of Ocean Engineering and Technology / v.27, no.3, 2013 , pp. 67-72 More about this Journal
Abstract
In this study, numerical analyses that considered the dynamic interaction effects between the flow and a turbine were carried out to investigate the power output performance of an H-type Darrieus turbine rotor, which is one of the representative lifting-type vertical-axis tidal-current turbines. For this purpose, a commercial CFD code, Star-CCM+, was utilized for an example three-bladed turbine with a rotor diameter of 3.5 m, a solidity of 0.13, and the blade shape of an NACA0020 airfoil, and the optimal tip speed ratio (TSR) and corresponding maximum power coefficient were evaluated through exhaustive simulations with different sets of flow speed and external torque conditions. The optimal TSR and maximum power coefficient were found to be approximately 1.84 and 48%, respectively. The torque and angular velocity pulsations were also investigated, and it was found that the pulsation ratios for the torque and angular velocity were gradually increased and decreased with an increase in TSR, respectively.
Keywords
Flow-turbine interaction analysis; Computational fluid dynamics (CFD); Vertical axis tidal current turbine; Darrieus turbine;
Citations & Related Records
Times Cited By KSCI : 5  (Citation Analysis)
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