Computational Analyses on Aerodynamic Characteristics of Flatback Wind Turbine Airfoils
The flatback wind turbine airfoils have advantages of structure and aerodynamic performance. Blunt trailing edge or flatback airfoils are studied especially for the inboard region of large wind turbine blades. The drawback to the flatback design is known as the production of large vortices downstream of the airfoil that tend to degrade the performance of the blade. The overall objective of the present research is to have a better understanding of the airfoil performance characteristics such as the loss in aerodynamic performance balanced by the structural performance gain. The performance of the S809-100 flatback airfoil is simulated and compared with the original thin-trailing edge S809 airfoil by the Computational Fluid Dynamics (CFD) technique in the present paper. It is shown that the flatback airfoil can increase the sectional maximum lift coefficient and lift curve slope, and reduces the well-documented sensitivity of the lift characteristics of thin airfoils to surface soiling in comparition with the traditional thin trailing edge airfoil.
flatback airfoils aerodynamic performance CFD wind turbine
Ren-nian LI Rui YANG Shi-ang ZHANG De-shun LI
Lanzhou University of Technology Engineering Center for Wind Turbines of Gansu Province
国际会议
2007上海国际风能大会(Wind Power Shanghai 2007)
上海
英文
470-481
2007-11-01（万方平台首次上网日期，不代表论文的发表时间）