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Taylor vortices versus Taylor columns

Published online by Cambridge University Press:  30 May 2014

Laurette S. Tuckerman*
Affiliation:
PMMH (UMR 7636 CNRS - ESPCI - UPMC Paris 6 - UPD Paris 7), 75005 Paris, France
*
Email address for correspondence: laurette@pmmh.espci.fr
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Abstract

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Taylor–Couette flow is inevitably associated with the visually appealing toroidal vortices, waves, and spirals that are instigated by linear instability. The linearly stable regimes, however, pose a new challenge: do they undergo transition to turbulence and if so, what is its mechanism? Maretzke et al. (J. Fluid Mech., vol. 742, 2014, pp. 254–290) begin to address this question by determining the transient growth over the entire parameter space. They find that in the quasi-Keplerian regime, the optimal perturbations take the form of Taylor columns and that the maximum energy achieved depends only on the shear.

Information

Type
Focus on Fluids
Copyright
© 2014 Cambridge University Press