Li Shijun, Zhao Zhenzhou, Su Chunhao, et al. EFFECT OF VORTEX GENERATOR SHAPE ON DYNAMIC STALL OF S809 WING SECTION AT DEEP STALL[J]. 2025, 46(3): 595-601.
Li Shijun, Zhao Zhenzhou, Su Chunhao, et al. EFFECT OF VORTEX GENERATOR SHAPE ON DYNAMIC STALL OF S809 WING SECTION AT DEEP STALL[J]. 2025, 46(3): 595-601. DOI: 10.19912/j.0254-0096.tynxb.2023-1859.
Using k-ω SST 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.
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