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Stability of time-dependent rotational Couette flow. Part 1. Experimental investigation

Published online by Cambridge University Press:  29 March 2006

R. P. Kirchner  and
C. F. Chen
R. P. Kirchner
Affiliation:
Mechanical Engineering Department, Newark College of Engineering
C. F. Chen
Affiliation:
Department of Mechanical and Aerospace Engineering, Rutgers University
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Abstract

The stability of viscous time-dependent rotational Couette flow, induced by an impulsively started inner cylinder was experimentally investigated. The ratio of the radius of the inner cylinder to that of the outer cylinder was $\frac{1}{10}$. The space between the cylinders was filled with distilled water. The time-dependent instabilities were observed by means of dye injection. They appeared as a series of disks more or less evenly spaced along the inner cylinder. The spacing and growth of these instabilities were recorded using a motion picture camera. From the motion pictures the critical time (which is the time from the impulsive start to the first onset of instability) and spacing of the instabilities were experimentally determined, and a marginal stability curve (Reynolds number versus critical time) was constructed.

Type
Research Article
Information
Journal of Fluid Mechanics , Volume 40 , Issue 1 , 14 January 1970 , pp. 39 - 47
Copyright
© 1970 Cambridge University Press

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References

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