Velocity measurements of vortex breakdown in an enclosed cylinder

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Experimental measurements were carried out of three-component velocity fields inside a cylindrical container. Flow was driven by the rotation of the top endwall disk. The purpose of the precision laser-Doppler velocimetry measurements was to describe the velocity characteristics pertinent to the vortex breakdown phenomenon. A turntable experimental apparatus was fabricated. Extensive laser-Doppler measurements, as well as flow visualizations, were made for the aspect ratio 1.50 and 2.50, and the Reynolds number ranges 0.99X10(3)-2.20X10(3). The measured meridional velocities were found to be consistent with the prior visualization studies. The characteristic changes in swirling motions in the vicinity of vortex breakdown bubble are depicted. Detailed flow patterns near the rotating disk are constructed by using the experimental data.
Publisher
ASME-AMER SOC MECHANICAL ENG
Issue Date
2001-09
Language
English
Article Type
Article
Keywords

CYLINDRICAL CONTAINER; FLOW; FLUID

Citation

JOURNAL OF FLUIDS ENGINEERING-TRANSACTIONS OF THE ASME, v.123, no.3, pp.604 - 611

ISSN
0098-2202
URI
http://hdl.handle.net/10203/85280
Appears in Collection
ME-Journal Papers(저널논문)
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