Journal
PHYSICS OF FLUIDS
Volume 12, Issue 10, Pages 2367-2371Publisher
AMER INST PHYSICS
DOI: 10.1063/1.1289396
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We are interested in the amount of fluid left behind a drop moved inside a capillary tube. Long ago, Taylor showed that for very viscous liquids moved at small velocities, the film thickness is a monotonic increasing function of the capillary number. New data obtained with liquids of low viscosity are reported here and compared with Taylor's law. Two successive effects are observed: above a threshold in capillary number, the film is thicker than a Taylor film; at a very high speed, the deposition law becomes a decreasing function of the drop velocity. Both behaviors are analyzed thanks to scaling arguments and shown to be consequences of inertia. (C) 2000 American Institute of Physics. [S1070- 6631(00)00610-3].
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