Volume 41, Number 4, february II 1998
|Page(s)||461 - 466|
|Section||Cross-disciplinary physics and related areas of science and technology|
|Published online||01 September 2002|
Convective instability in foam drainage
Department of Physics, Trinity College,
University of Dublin, Dublin, Ireland
Accepted: 17 December 1997
The use of a column of steadily drained foam as a sample of wet foam is limited by flow instability as the liquid fraction is increased. We report a study of this instability, which takes the form of a convective roll of bubble motion at a value of liquid fraction roughly half that of the wet foam limit at which a static wet foam becomes unstable.
PACS: 82.70.Rr – Aerosols and foams / 47.60.+i – Flows in ducts, channels, nozzles, and conduits / 47.20.Ky – Nonlinearity (including bifurcation theory)
© EDP Sciences, 1998
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