S-Space College of Engineering/Engineering Practice School (공과대학/대학원) Dept. of Mechanical Aerospace Engineering (기계항공공학부) Journal Papers (저널논문_기계항공공학부)
EDISON_전산열유체를 활용한풍력발전기 타워의 후류 불안정성 억제에 관한 수치연구 : Numerical Analysis for Suppressing Unsteady Wake Flow on Wind Turbine Tower Using EDISON_CFD
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- Issue Date
- 한국전산유체공학회지 Vol.18 No.1, pp. 36-42
- 공학 ; 전산유체역학(CFD) ; 풍력발전기(Wind Power Generator) ; 비정상유동(Unsteady Flow) ; 와류 진동(Vortex Shedding) ; 에디슨_전산열유체(EDISON_CFD)
- 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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