Journal of Ocean Engineering and Technology (한국해양공학회지)

Korean Society of Ocean Engineers (한국해양공학회)
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Flow-Turbine Interaction CFD Analysis for Performance Evaluation of Vertical Axis Tidal Current Turbines (I)

수직축 조류 터빈 발전효율 평가를 위한 유동-터빈 연동 CFD 해석 (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.)
  • 이진학 (한국해양과학기술원 연안개발.에너지연구부) ;
  • 오상호 (한국해양과학기술원 연안개발.에너지연구부) ;
  • 박진순 (한국해양과학기술원 연안개발.에너지연구부) ;
  • 이광수 (한국해양과학기술원 연안개발.에너지연구부) ;
  • 이상열 ((주)리우스)
  • Received : 2013.03.19
  • Accepted : 2013.06.10
  • Published : 2013.06.30
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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

References

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