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Delaying transition in Taylor–Couette flow with axial motion of the inner cylinder

Published online by Cambridge University Press:  10 October 1997

AREL Y. WEISBERG ,
IOANNIS G. KEVREKIDIS  and
ALEXANDER J. SMITS
AREL Y. WEISBERG
Affiliation:
Present address: SciTec, Inc., 100 Wall St., Princeton NJ 08540, USA. Department of Mechanical and Aerospace Engineering, Princeton University, Princeton, NJ 08544-0710, USA
IOANNIS G. KEVREKIDIS
Affiliation:
Department of Chemical Engineering, Princeton University, Princeton, NJ 08544, USA
ALEXANDER J. SMITS
Affiliation:
Department of Mechanical and Aerospace Engineering, Princeton University, Princeton, NJ 08544-0710, USA
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Abstract

Periodic axial motion of the inner cylinder in Taylor–Couette flow is used to delay transition to Taylor vortices. The outer cylinder is fixed. The marginal stability diagram of Taylor–Couette flow with simultaneous periodic axial motion of the inner cylinder is determined using flow visualization. For the range of parameters studied, the degree of enhanced stability is found to be greater than that predicted by Hu & Kelly (1995), and differences in the scaling with axial Reynolds number are found. The discrepancies are attributed to essential differences between the base flow in the open system considered by Hu & Kelly, where mass is conserved over one period of oscillation, and the base flow in the enclosed experimental apparatus, where mass is conserved at all sections at all times.

Type
Research Article
Information
Journal of Fluid Mechanics , Volume 348 , 10 October 1997 , pp. 141 - 151
Copyright
© 1997 Cambridge University Press

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