Volume 36, Number 3, October III 1996
|Page(s)||173 - 178|
|Published online||01 September 2002|
Steady foam states
Departamento de Física, ICEx, UFMG, C.P. 702, 30.161-970
Belo Horizonte/MG, Brasil
Accepted: 16 September 1996
Three-dimensional foams were produced by mixing air and water+Extran solutions in a shaker. Long-time observations revealed that bubble radius distributions become stationary. Differently from the maximum-entropy coarsened distributions for 2D foams, we found radius distributions to be Gaussian. The stationary distributions are found above a threshold shaking energy. Foams created at the threshold store finite energy which increases roughly linearly with applied energy.
PACS: 05.70.Ln – Nonequilibrium thermodynamics, irreversible processes / 82.70.Rr – Aerosols and foams / 83.70.Hq – Heterogeneous liquids: suspensions, dispersions, emulsions, pastes, slurries, foams, block copolymers, etc.
© EDP Sciences, 1996
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