https://doi.org/10.1140/epje/i2007-10286-0
ISMC-2007
Simulations of two-dimensional foam rheology: Localization in linear Couette flow and the interaction of settling discs
1
Institute of Mathematical and Physical Sciences, Aberystwyth University, SY23 3BZ, Ceredigion, Wales, UK
2
UMR 5588 - Laboratoire Spectrométrie Physique, B.P. 87, F-38402, St. Martin d'Hères Cedex, France
* e-mail: foams@aber.ac.uk
Received:
19
September
2007
Accepted:
31
January
2008
Published online:
11
April
2008
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 –
© EDP Sciences, Società Italiana di Fisica and Springer-Verlag, 2008
