摘要
受动态失速影响,垂直轴风力机在低叶尖速比下气动性能降低、主轴偏振增加,导致垂直轴风力机运营维护成本增加。为缓解动态失速的不利影响,通过数值模拟方法研究了涡流发生器对垂直轴风力机翼型动态失速特性的影响。基于SST k-ω湍流模型,对涡流发生器不同安装间距(6 mm、8 mm、10 mm)与安装角(12°、15°、18°、21°)对翼型动态失速过程的气动性能进行数值模拟研究。研究结果表明,涡流发生器安装间距对动态失速的影响较小,其中安装间距为8 mm时对翼型动态失速的改善效果更好。涡流发生器安装角对动态失速影响较大,当涡流发生器安装角较小时,翼型处于大迎角时涡流发生器并不能起到抑制流动分离的作用,其中安装角为18°时对翼型动态失速改善效果更好。
Under the influence of dynamic stall,the aerodynamic performance of vertical axis wind turbine decreases and the spindle polarization increases at low tip ratio,which leads to the increase of operation and maintenance cost of vertical axis wind turbine.In order to reduce the adverse effect of dynamic stall,the effect of vortex generator on the dynamic stall characteristics of vertical axis wind turbine airfoil is studied by numerical simulation.Based on SST k-ωturbulence model,the aerodynamic performance of vortex generators in dynamic stall process with different installation spacing(6 mm,8 mm,10 mm)and installation angle(12°,15°,18°,21°)is simulated.The installation spacing of vortex generator has little influence on dynamic stall,and the installation spacing of 8 mm has better effect on dynamic stall of airfoil.The installation angle of vortex generator has great influence on dynamic stall.When the installation angle of vortex generator is small and the airfoil is at a large angle of attack,vortex generator cannot inhibit flow separation,the dynamic stall of airfoil is improved better when the installation angle is 18°.
作者
王清
朱仕桓
张翔
WANG Qing;ZHU Shi-huan;ZHANG Xiang(Department of Energy and Power Engineering,Lanzhou University of Technology,Lanzhou 730050,China)
出处
《液压气动与密封》
2025年第8期37-44,共8页
Hydraulics Pneumatics & Seals
基金
兰州理工大学红柳优秀青年人才支持计划(2022)。
关键词
涡流发生器
翼型
动态失速
安装间距
安装角
vortex generator
airfoil
dynamic stall
installation spacing
installation angle
