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Observations of unsteady flow arising after vortex breakdown

Published online by Cambridge University Press:  29 March 2006

John J. Cassidy  and
Henry T. Falvey
John J. Cassidy
Affiliation:
University of Missouri, Columbia, Missouri
Henry T. Falvey
Affiliation:
U.S. Bureau of Reclamation, Denver, Colorado
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Abstract

In rotating flow moving axially through a straight tube, a helical vortex will be generated if the angular momentum flux is sufficiently large relative to the flux of linear momentum. This paper describes an experimental study of the occurrence, frequency and peak-to-peak amplitude of the wall pressure generated by this vortex. The experimental results are displayed in dimensionless form in terms of a Reynolds number, a momentum parameter and tube geometry.

Type
Research Article
Information
Journal of Fluid Mechanics , Volume 41 , Issue 4 , 15 May 1970 , pp. 727 - 736
Copyright
© 1970 Cambridge University Press

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References

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