Moderately strong vorticity in a bathtub-type flow

Klimenko, A. Y. (2001) Moderately strong vorticity in a bathtub-type flow. Theoretical and Computational Fluid Dynamics, 14 4: 243-257. doi:10.1007/s001620050139


Author Klimenko, A. Y.
Title Moderately strong vorticity in a bathtub-type flow
Journal name Theoretical and Computational Fluid Dynamics   Check publisher's open access policy
ISSN 0935-4964
1432-2250
Publication date 2001-01
Sub-type Article (original research)
DOI 10.1007/s001620050139
Volume 14
Issue 4
Start page 243
End page 257
Total pages 15
Editor M.Y. Hussaini
Place of publication Germany
Publisher Springer-Verlag
Collection year 2001
Language eng
Subject C1
291801 Fluidization and Fluid Mechanics
780102 Physical sciences
Abstract Theoretical and numerical analysis is performed for an inviscid axisymmetric vortical bathtub-type flow. The level of vorticity is kept high so that the image of the flow on the radial-axial plane (r-z plane) is not potential. The most significant findings are: (1) the region of validity of the strong vortex approximation is separated from the drain by a buffer region, (2) the power-law asymptote of the stream function, specified by Delta Psi similar to r(4/3) Deltaz, appears near the axis when vorticity in the flow is sufficiently strong and (3) the local Rossby number in the region of the 4/3 power-law the initial vorticity level in the flow and the global Rossby number.
Keyword Mechanics
Physics, Fluids & Plasmas
Q-Index Code C1

Document type: Journal Article
Sub-type: Article (original research)
Collection: School of Mechanical & Mining Engineering Publications
 
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Created: Tue, 14 Aug 2007, 15:22:27 EST