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Type: Journal article
Title: Unsteady fronts in the spin-down of a fluid-filled torus
Author: del Pino, C.
Hewitt, R.
Clarke, R.
Mullin, T.
Denier, J.
Citation: Physics of Fluids, 2008; 20(12):124104-1-124104-5
Publisher: Amer Inst Physics
Issue Date: 2008
ISSN: 1070-6631
Statement of
C. del Pino, R. E. Hewitt, R. J. Clarke, T. Mullin and J. P. Denier
Abstract: We report the results of an experimental investigation into fluid motion induced by the deceleration to rest of a rigidly rotating fluid-filled torus. Transition to a transient turbulent state is found where the onset of the complicated motion is triggered by a small-scale wavelike instability. The wave forms on a front that propagates from the inner wall of the toroidal container after it is stopped. We reveal the origins of the front through a combination of careful experimental measurements, boundary-layer analysis, and computation of the axisymmetric Navier-Stokes equations. © 2008 American Institute of Physics.
Rights: Copyright © 2008 American Institute of Physics
DOI: 10.1063/1.3054146
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Appears in Collections:Aurora harvest
Environment Institute publications
Mathematical Sciences publications

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