Simulations of two-dimensional foam rheologyLocalization in linear Couette flow and the interaction of settling discs

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Type Article
Original languageEnglish
Pages (from-to)81-89
Number of pages9
JournalEuropean Physical Journal E
Volume26
Issue number1
Early online date11 Apr 2008
DOI
Publication statusPublished - May 2008
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Abstract

Surface Evolver simulations of flowing two-dimensional foams are described. These are used for two purposes. Firstly, to extract the location of the T 1 s, the changes in bubble topology that occur during plastic flow. It is shown that in linear Couette flow the T 1 s are localized in space, becoming more so as the polydispersity of the foam decreases. Secondly, the sedimentation of two circular discs through a foam under gravity is studied. If the discs are sufficiently close, they begin to interact and one moves behind the other during their descent.

Keywords

  • 47.57.Bc Foams and emulsions, 83.80.Iz Emulsions and foams, 83.50.Ax Steady shear flows, viscometric flow

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