Issue
EPL
Volume 83, Number 5, September 2008
Article Number 54005
Number of page(s) 5
Section Electromagnetism, Optics, Acoustics, Heat Transfer, Classical Mechanics, and Fluid Dynamics
DOI http://dx.doi.org/10.1209/0295-5075/83/54005
Published online 02 September 2008
EPL, 83 (2008) 54005
DOI: 10.1209/0295-5075/83/54005

Observations of a variety of drainage patterns in bamboo foams

V. Carrier, S. Hutzler and D. Weaire

School of Physics, Trinity College Dublin - Dublin 2, Ireland

stefan.hutzler@tcd.ie

received 9 November 2007; accepted in final form 18 July 2008; published September 2008
published online 2 September 2008

Abstract
We have explored the patterns of drainage in a bamboo foam, i.e. a foam consisting of an arrangement of parallel soap films with equidistant spacing. We find an intriguing variety of such patterns, both static and dynamic. All involve the formation of drainage channels at the wall of the column, which are variously arranged and in some cases rotating and oscillating.

PACS
47.54.-r - Fluid dynamics: Pattern selection; pattern formation.
47.20.Ky - Flow instabilities: Nonlinearity, bifurcation, and symmetry breaking.
82.70.Rr - Aerosols and foams.

© EPLA 2008