Volume 40, Number 1, October 1997
|Page(s)||37 - 42|
|Section||Classical areas of phenomenology|
|Published online||01 September 2002|
Global drift of a circular array of liquid columns
Laboratoire de Physique et de Mécanique des
Milieux Hétérogènes (PMMH),
URA 857 of CNRS, Ecole Supérieure de Physique et de Chimie Industrielles
(ESPCI), 10 rue Vauquelin, 75005 Paris, France
2 Groupe de Physique du Solide (GPS), Université Paris 7, Pierre et Marie Curie, 4 place Jussieu, 75005 Paris, France
Accepted: 28 August 1997
After accurate horizontality adjustments, a regular pattern of liquid columns formed below an overflowing circular dish can be forced to a global rotation. In this state, the whole pattern is drifting at a constant and uniform speed, with parity breaking of its elementary cells. This speed increases with the flow rate, is independent of the fluid viscosity, and increases with the value of the pattern wavelength. Possible breaking mechanisms of this global drift state into localized dilation waves are also qualitatively discussed.
PACS: 47.20.Ma – Interfacial instability / 47.54.+r – Pattern selection / 68.10.-m – Fluid surfaces and fluid-fluid interfaces
© EDP Sciences, 1997
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