Department of Physics Papers
Document Type
Journal Article
Date of this Version
10-13-2006
Publication Source
Europhysics Letters
Volume
76
Issue
4
Start Page
683
Last Page
689
DOI
10.1209/epl/i2006-10304-5
Abstract
We measure the liquid content, the bubble speeds, and the distribution of bubble sizes, in a vertical column of aqueous foam maintained in steady state by continuous bubbling of gas into a surfactant solution. Nearly round bubbles accumulate at the solution/foam interface, and subsequently rise with constant speed. Upon moving up the column, they become larger due to gas diffusion and more polyhedral due to drainage. The size distribution is monodisperse near the bottom and polydisperse near the top, but there is an unexpected range of intermediate heights where it is bidisperse with small bubbles decorating the junctions between larger bubbles. We explain the evolution in both bidisperse and polydisperse regimes, using Laplace pressure differences and taking the liquid fraction profile as a given.
Recommended Citation
Feitosa, K., Halt, O. L., Kamien, R. D., & Durian, D. J. (2006). Bubble Kinetics in a Steady-State Column of Aqueous Foam. Europhysics Letters, 76 (4), 683-689. http://dx.doi.org/10.1209/epl/i2006-10304-5
Date Posted: 13 October 2017
This document has been peer reviewed.