摘要
采用k-ωSST湍流模型,对加装涡流发生器(VG)的S809翼段的深度动态失速过程进行数值模拟,探究三角形、梯形、矩形3种VG对翼段深失速的影响。从翼段升阻力系数、表面压力系数和VG流向涡3个角度对比分析。结果表明:矩形VG对深失速抑制效果最好,最大升力系数为1.812,失速攻角为20.224°,较光滑翼段,升力系数提升11.25%,失速角延迟了1.622°。源于深失速时,矩形VG的流向涡速度最快、涡核尺寸最大、涡量最强,对边界层的影响最大,更有利于抑制流动分离。
Using k-ωSST turbulence model is used to numerically simulate the deep dynamic stall process of the S809 wing segment equipped with a vortex generator(VG),and to explore the effects of three types of VGs,triangular,trapezoidal,and rectangular,on the deep stall of the wing segment.Comparative analysis is conducted from three perspectives:lift drag coefficient,surface pressure coefficient,and VG flow vortex of the wing segment.The results show that the rectangular VG has the best effect on deep stall suppression,with a maximum lift coefficient of 1.812 and a stall attack angle of 20.224°.Compared to the smooth wing segment,the lift coefficient is increased by 11.25%,and the stall angle is delayed by 1.622°.When originating from deep stall,the rectangular VG has the fastest flow vortex velocity,the largest vortex core size,and the strongest vorticity,which has the greatest impact on the boundary layer and is more conducive to suppressing flow separation.
作者
李世君
赵振宙
苏纯浩
王丁丁
宋继烨
魏宏
Li Shijun;Zhao Zhenzhou;Su Chunhao;Wang Dingding;Song Jiye;Wei Hong(College of Energy and Electrical Engineering,Hohai University,Nanjing 211100,China)
出处
《太阳能学报》
北大核心
2025年第3期595-601,共7页
Acta Energiae Solaris Sinica
基金
国家自然科学基金(52376179,51876054)。
关键词
数值模拟
流动控制
风力机
翼型
动态失速
涡流发生器
numerical simulation
flow control
wind turbines
wing
dynamic stall
vortex generator
