Affiliation:
1. North China Electric Power University
2. Hebei Software Institute
Abstract
To improve the ability of capturing the wind energy of wind turbine and shorten the design period is of great importance to designing wind turbine blade. The article established S809 airfoil model with trailing edge flaps, The gap of the frontal subject and trailing edge flap adopt uniform gap structure, this structure will reduce the influence of the gap on aerodynamic characteristics.Using the k-ω Two equation turbulence model , the article calculated aerodynamic performance of S809 with 10% chord length trailing edge flaps under different deflecting angles. Results show that gap between the main body and trailing edge flap has little effect on airfoil aerodynamic performance, however, the deflection Angle of Trailing edge flap have great affect on airfoil aerodynamic performance, when deflection Angle of trailing edge flap is 14 ° degrees ,the lift-to-drag ratio is the largest.
Publisher
Trans Tech Publications, Ltd.
Reference9 articles.
1. Li Yc, Jj Wang, J Hua. Experimental investigations on the effects of divergent trailing edge and Gurney flaps on a supercritical airfoil. Aerospace Science and Technology, 2007, 11(2): 91-99.
2. Wang Jj, Yc Li, K-S Choi. Gurney flap—Lift enhancement, mechanisms and applications. Progress in Aerospace Sciences, 2008, 44(1): 22-47.
3. Zhao Wanli，Zhang Lida, Numerical simulation on the flow control mounting gurney flaps for a large horizontal wind turbine. North China Institute of Water Conservancy and Hydroelectric Power, 2011, 32(6): 17-22.
4. Troldborg Niels. Computational study of the Risø-B1-18 airfoil with a hinged flap providing variable trailing edge geometry. Wind Engineering, 2005, 29(2): 89-114.
5. LI Chuanfeng, XU Yu, XU Jianzhong. Influence of Slot on Wind Turbine Airfoil With Trailing Edge Flaps[J]. Journal engineering thermophysics, 2011, 32(11): 1851-1854.