Journal of computational fluids engineering (한국전산유체공학회지)

Korean Society of Computational Fluids Engineering (한국전산유체공학회)
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NUMERICAL ANALYSIS FOR SUPPRESSING UNSTEADY WAKE FLOW ON WIND TURBINE TOWER USING EDISON_CFD

EDISON_전산열유체를 활용한 풍력발전기 타워의 후류 불안정성 억제에 관한 수치연구

  • Kim, S.Y. (Dept. of Mechanical and Aerospace Engineering, Seoul Univ.) ;
  • Jin, D.H. (Dept. of Mechanical and Aerospace Engineering, Seoul Univ.) ;
  • Lee, K.B. (Interdisciplinary Program in Computational Science & Technology, Seoul Univ.) ;
  • Kim, C. (Dept. of Mechanical and Aerospace Engineering, Seoul Univ.)
  • 김수용 (서울대학교 기계항공공학부) ;
  • 진도현 (서울대학교 기계항공공학부) ;
  • 이근배 (서울대학교 협동과정 계산과학전공) ;
  • 김종암 (서울대학교 기계항공공학부)
  • Received : 2012.09.10
  • Accepted : 2013.02.27
  • Published : 2013.03.31
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Abstract

The performance of the wind turbine is determined by wind speed and unsteady flow characteristics. Unsteady wake flow causes not only the decline in performance but also structural problems of the wind turbine. In this paper, conceptual designs for the wind turbine tower are conducted to minimize unsteady wake flow. Numerical simulations are performed to inspect the shape effect of the tower. Through the installation of additional structures at the rear of the tower, the creation of Karman vortex is delayed properly and vortex interactions are reduced extremely, which enhance the stability of the wind turbine. From the comparative analysis of lift and drag coefficients for each structure, it is concluded that two streamwise tips with a splitter plate have the most improved aerodynamic characteristics in stabilizing wake flow.

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References

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