Study on Boundary Layer Separation of Wind Turbine Airfoil During Dynamic Stall

被引：0
|
作者：
Li, Shuang [1 ,4 ]
Zhang, Lei [1 ,2 ,3 ,4 ]
Song, Juan-Juan [1 ,2 ,3 ]
Yang, Ke [1 ,2 ,3 ,4 ]
机构：
[1] Institute of Engineering Thermophysics, Chinese Academy of Sciences, Beijing,100190, China
[2] Wind Energy Utilization Laboratory of Chinese Academy of Sciences, Beijing,100190, China
[3] National Research and Development Center of Wind Turbine Blade, Beijing,100190, China
[4] University of Chinese Academy of Sciences, Beijing,100049, China
来源：
Kung Cheng Je Wu Li Hsueh Pao/Journal of Engineering Thermophysics | 2019年 / 40卷 / 09期
关键词：
Aerodynamic stalling - Separation - Angle of attack - Reynolds number - Wind turbine blades - Boundary layers - Turbomachine blades - Turbine components;
D O I：
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学科分类号：
摘要：
Airfoils are in pitching motions because of the actual operation condition of wind turbine blades, which causes dynamic stall phenomenon. Airfoil DU91_W2_250 is selected in this paper to operate in pitching motions under Reynolds number 3×106. The dynamic stall characteristics of airfoil during different pitching motions are simulated using dynamic mesh, and the aerodynamic characteristics and evolution of two-dimensional boundary layer are studied. The effects of several parameters on aerodynamic coefficients, separation point and shedding vortex are investigated, such as the reduced frequency, amplitude of angle of attack and turbulence intensity. It provides a theoretical basis for the subsequent three-dimensional airfoil dynamic stall simulation. © 2019, Science Press. All right reserved.
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页码：2043 / 2050
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