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Change in wave-form and mean flow associated with wavelength variations in rotating Couette flow. Part 1

Published online by Cambridge University Press:  28 March 2006

H. A. Snyder
H. A. Snyder
Affiliation:
Woods Hole Oceanographic Institution, Woods Hole, Massachusetts 02543 On leave from Department of Physics, Brown University.
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Abstract

When rotating Couette flow becomes unstable a periodic vortex structure is formed. For the wide-gap case, this flow is steady for a rather large range of the Taylor number above onset. In the region of finite amplitude instability the wave-numbers of the periodic structure are not unique. It is shown empirically that the non-uniqueness is not an end effect but a bonafide property of the flow and that the wave-form is a unique function of the wavelength. Data is presented to demonstrate the interval over which the wave-numbers can be varied when the parameters of the system are fixed. The large effect on the wave-form of small changes in the wavelength is also illustrated. These conclusions are based on extensive measurements of the azimuthal drift velocity for a particular mode of secondary flow.

Type
Research Article
Information
Journal of Fluid Mechanics , Volume 35 , Issue 2 , 16 January 1969 , pp. 337 - 352
Copyright
© 1969 Cambridge University Press

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