Leading Edge Separation From a Blunt Plate at Low Reynolds Number

[+] Author and Article Information
J. C. Lane, R. I. Loehrke

Mechanical Engineering Department, Colorado State University, Fort Collins, Colo. 80523

J. Fluids Eng 102(4), 494-496 (Dec 01, 1980) (3 pages) doi:10.1115/1.3240731 History: Received March 15, 1979; Online October 26, 2009


The flow over a blunt plate aligned parallel to the stream was visualized using dye tracers. A leading edge separation bubble was observed to form at a Reynolds number based on plate thickness of 100. The steady, laminar separation bubble on a long plate, L/t ≥ 8, grows in size with increasing Reynolds number reaching a maximum streamwise length at Ret = 325. The separated shear layer becomes unsteady and the bubble shrinks in size with further increases in Reynolds number. The leading and trailing edge separation zones on short plates, L/t ≤ 4, may combine to form a large recirculation pocket.

Copyright © 1980 by ASME
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