Vortical flow over the free end surface of a finite circular cylinder mounted on a flat plate

Vortical flow over the free end surface of a finite circular cylinder mounted on a flat plate A flow visualization study using the oil streak-line method and the smoke–laser light sheet arrangement was carried out to investigate the three-dimensional separated flow pattern over the free end surface region of a finite circular cylinder (aspect ratios of 1.25 and 4.25) mounted on a flat plate. The experiment was performed for the cases of two Reynolds numbers: 5.92×103 and 1.48×105. An owl-faced configuration of various kinds of singular points on the free end surface was disclosed from the oil surface flow visualization. In order to aid understanding of the oil streak-line pattern, the smoke–laser light sheet visualization clearly demonstrated that a pair of tornado-like vortices evolving from the eyes of the owl face marched along the downstream distance over the free end surface together with a pair of side tip vortices. A topological sketch to characterize the surface flow and the vortical structure emanating from the top surface is included. http://www.deepdyve.com/assets/images/DeepDyve-Logo-lg.png Experiments in Fluids Springer Journals

Vortical flow over the free end surface of a finite circular cylinder mounted on a flat plate

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Copyright © 2003 by Springer-Verlag
Engineering; Engineering Fluid Dynamics; Fluid- and Aerodynamics; Engineering Thermodynamics, Heat and Mass Transfer
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