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.
Key words
numerical simulation /
flow control /
wind turbines /
wing /
dynamic stall /
vortex generator
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