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.
Original language | English |
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Article number | 124104 |
Pages (from-to) | 1-5 |
Number of pages | 5 |
Journal | Physics of Fluids |
Volume | 20 |
Issue number | 12 |
DOIs | |
Publication status | Published - 2008 |
Externally published | Yes |