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Visualization of Vortical Flow Around the Free End Surface of a Finite Circular Cylinder Mounted on a Flat Plate
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 Title & Authors
Visualization of Vortical Flow Around the Free End Surface of a Finite Circular Cylinder Mounted on a Flat Plate
No, Seong-Cheol; Park, Seung-O;
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A flow visualization study using the oil film method and the smoke-laser light sheet arrangement is carried out to investigate the three-dimensional flow pattern around 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 is performed for the cases of two Reynolds numbers: 5.9210and 1.4810(sup)5. Various kinds of singular points on the free-end surface are disclosed from the oil surface flow visualization. The smoke-laser light sheet visualization, to aid in understanding the oil streak-line patterns, clearly demonstrates that a pair of tornado-like vortices marched along the downstream together with a pair of side tip vortices. A topological sketch to characterize the surface flow and the four vortices emanating from the top surface is included.
Finite Circular Cylinder;Oil Flow Visualization;Laser Light Sheet Visualization;Singular Point;Tornado-Like Vortex;Flow Topology;
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대기경계층 내에 놓인 자유단 원주의 형상비가 후류유동에 미치는 영향에 관한 연구,박철우;이상준;

대한기계학회논문집B, 2001. vol.25. 12, pp.1821-1830 crossref(new window)
대기경계층 내에 놓인 실린더의 자유단 형상변화가 후류유동에 미치는 영향에 관한 연구,박철우;이상준;

대한기계학회논문집B, 2003. vol.27. 1, pp.105-116 crossref(new window)
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