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A further note on the bathtub vortex

Published online by Cambridge University Press:  28 March 2006

D. L. Kelly ,
B. W. Martin  and
E. S. Taylor
D. L. Kelly
Affiliation:
Massachusetts Institute of Technology, Cambridge, Massachusetts
B. W. Martin
Affiliation:
Massachusetts Institute of Technology, Cambridge, Massachusetts
E. S. Taylor
Affiliation:
Massachusetts Institute of Technology, Cambridge, Massachusetts
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Abstract

Using identical equipment, an attempt was made to reproduce the unexpected flow reversals obtained by Sibulkin (1962) in his study of the vortex motion associated with draining a liquid from a vessel through an orifice in its bottom. Reversal of the initial direction of rotation was found only for counter-clockwise filling with large initial heads and settling times, unless during settling or draining of the vessel a shock was applied to the system, in which case the tendency to reversal was generally more pronounced with clockwise filling. Re-reversal of the motion was also observed in a number of cases. An alternative explanation is proposed, based on a consideration of the surface waves generated by a shock.

Type
Research Article
Information
Journal of Fluid Mechanics , Volume 19 , Issue 4 , August 1964 , pp. 539 - 542
Copyright
© 1964 Cambridge University Press

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References

Schlichting, H. 1955 Boundary-Layer Theory. New York: McGraw-Hill.
Sibulkin, M. 1962 J. Fluid Mech. 14, 21.