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Bubble size–topology correlations in two-dimensional foams derived from surface energy minimization

M A Fortes1 and P I C Teixeira1,2

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We obtain the number fractions xi, the average areas {A}i and the average perimeters {P}i of i-sided bubbles in a two-dimensional foam by minimizing the total surface energy and assuming a simple relation between {P}i and {√A}i. Calculations for linear and Weibull distributions of the square root of the bubble area yield large deviations, particularly at small i, from Lewis's and Desch's laws, which linearly relate {A}i and {P}i, respectively, to i. Nevertheless, we find good agreement with experimental results for xi, {P}i and {A}i in foams.


PACS

82.70.Rr Aerosols and foams

05.70.Np Interface and surface thermodynamics

68.03.Cd Surface tension and related phenomena

47.55.D- Drops and bubbles

02.50.Ng Distribution theory and Monte Carlo studies

MSC

60E05 Distributions: general theory

Subjects

Soft matter, liquids and polymers

Fluid dynamics

Computational physics

Surfaces, interfaces and thin films

Statistical physics and nonlinear systems

Chemical physics and physical chemistry

Dates

Issue 19 (16 May 2003)

Received 23 December 2002

Published 29 April 2003



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