2012.24: Unsteady fronts in the spin-down of a fluid-filled torus
2012.24: C. del Pino, R.E. Hewitt, R.J.C. Clarke, T. Mullin and J.P. Denier (2008) Unsteady fronts in the spin-down of a fluid-filled torus. Physics of Fluids, 20.
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DOI: 10.1063/1.3054146
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.
| Item Type: | Article |
|---|---|
| Uncontrolled Keywords: | Fluid dynamics, spin-up, rotating flows |
| Subjects: | PACS 2003 > 47 Fluid dynamics |
| MIMS number: | 2012.24 |
| Deposited By: | Dr Richard E. Hewitt |
| Deposited On: | 29 January 2012 |
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