Aerodynamic performance analysis of a trailing-edge flap for wind turbines Article Swipe

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Trailing edge Airfoil Stall (fluid mechanics) Lift coefficient Aerodynamics Drag coefficient Angle of attack Lift-to-drag ratio Computational fluid dynamics Pressure coefficient Lift (data mining) Leading edge Aerospace engineering Drag Mechanics Marine engineering Geology Physics Computer science Engineering Reynolds number Turbulence Data mining

Xu Bofeng , Junheng Feng , Qing Li , Chang Xu , Zhenzhou Zhao , Yue Yuan ·

YOU? · · 2018 · Open Access · · DOI: https://doi.org/10.1088/1742-6596/1037/2/022020 · OA: W2809412012

In this paper, a trailing-edge flap is designed based on the wind turbine airfoil S809. The aerodynamic performance and flowfield of the proposed trailing-edge flap airfoil are predicted by computational fluid dynamics (CFD) at angles of attack from -5° to 12.5°. The lift coefficient, drag coefficient, pressure contour, and streamline distribution of the proposed trailing-edge flap airfoil are analyzed and then compared with those of the traditional flaps. The results illustrate that the lift coefficient and the lift-to-drag ratio of the trailing-edge flap are markedly larger than those of the traditional flaps and that the trailing-edge flap can effectively improve the stall characteristics of the trailing-edge airfoil.