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- W894602479 abstract "By varying leading edge geometry to wing profiles during flapping flight, Ozen and Rockwell observed a pattern of alternating spanwise vortices which minimized spanwise flow. As a follow up study to [1], this investigation explored the effect of flapping frequency on these previously observed streamwise vortical structures. By increasing the flapping frequency, the alternating streamwise vortices resulting from a sinusoidal leading edge became stretched in the path of the wing due to an increase of wing cross-radial velocity. The streamwise vortices are shown to minimize spanwise flow even after being stretched. Instabilities were formed at higher flapping frequencies (f = 0.2 Hz) due to velocity shear generated by the large cross-radial velocity. These instabilities began to break down the alternating streamwise vortices resulting in the development of a different flow structure including an increase of spanwise flow. Keywords—flapping flight, sinusoidal leading edge, vortex generator, spanwise flow, streamwise vortex, passive flow control" @default.
- W894602479 created "2016-06-24" @default.
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- W894602479 date "2014-01-01" @default.
- W894602479 modified "2023-09-27" @default.
- W894602479 title "Effect of Flapping Frequency and Leading Edge Profile on Airfoil Leading Edge Vortical Structures" @default.
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