Vortex induction mechanism in bio-inspired herringbone groove array (IMAGE)
Caption
Due to the pressure difference, several small-scale induced vortices are created within the grooves and ultimately develop together into a pair of large-scale induced vortexes with high strength by the accumulation effect. Under the induction of the fluid in the grooves, the fluid adjacent to the upper surface of the groove array generates a spanwise velocity component and eventually becomes a part of the downstream large-scale induced vortices, which further enhances the strength of the induced vortices.
Credit
Chinese Journal of Aeronautics
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