Unsteady fronts in the spin-down of a fluid-filled torus

C. del Pino; R. E. Hewitt; R. J. Clarke; T. Mullin; J. P. Denier

doi:10.1063/1.3054146

Unsteady fronts in the spin-down of a fluid-filled torus

C. del Pino, R. E. Hewitt, R. J. Clarke, T. Mullin, J. P. Denier

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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.

Original language	English
Article number	124104
Journal	Physics of Fluids
Volume	20
Issue number	12
DOIs	https://doi.org/10.1063/1.3054146
Publication status	Published - 2008

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title = "Unsteady fronts in the spin-down of a fluid-filled torus",

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. {\textcopyright} 2008 American Institute of Physics.",

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AU - del Pino, C.

AU - Hewitt, R. E.

AU - Clarke, R. J.

AU - Mullin, T.

AU - Denier, J. P.

PY - 2008

Y1 - 2008

N2 - 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.

AB - 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.

U2 - 10.1063/1.3054146

DO - 10.1063/1.3054146

M3 - Article

SN - 1070-6631

VL - 20

JO - Physics of Fluids

JF - Physics of Fluids

IS - 12

M1 - 124104

ER -

Unsteady fronts in the spin-down of a fluid-filled torus

Abstract

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