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The European Physical Journal E

, Volume 26, Issue 1–2, pp 81–89 | Cite as

Simulations of two-dimensional foam rheology: Localization in linear Couette flow and the interaction of settling discs

  • A. Wyn
  • I. T. Davies
  • S. J. Cox
ISMC-2007

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.

PACS.

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

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Copyright information

© EDP Sciences, Società Italiana di Fisica and Springer-Verlag 2008

Authors and Affiliations

  • A. Wyn
    • 1
  • I. T. Davies
    • 1
  • S. J. Cox
    • 1
    • 2
  1. 1.Institute of Mathematical and Physical SciencesAberystwyth UniversityCeredigionUK
  2. 2.UMR 5588 - Laboratoire Spectrométrie PhysiqueSt. Martin d'Hères CedexFrance

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