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Complexities of splashing

R D Deegan1, P Brunet2 and J Eggers2

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COVER ILLUSTRATION

We study the impact of a drop of liquid onto a thin layer of the same liquid. We give an overview of the sequence of events that occur as the two most important dimensionless control parameters are varied. In particular, multiple cohorts of droplets can be ejected at different stages after impact due to different mechanisms. Edgerton's famous Milkdrop Coronet is only observed for a narrow range of parameters. Outside this range, the splash is either qualitatively different, or suffers from a much lower level of regularity.


PACS

47.55.db Drop and bubble formation

MSC

76Mxx Basic methods in fluid mechanics (See also 65-XX)

Subjects

Fluid dynamics

Dates

Issue 1 (January 2008)

Received 15 October 2007, in final form 29 October 2007

Published 3 December 2007



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