TY - JOUR
T1 - Simulations of two-dimensional foam rheology
T2 - Localization in linear Couette flow and the interaction of settling discs
AU - Wyn, Aled
AU - Davies, Ioan Tudur
AU - Cox, Simon John
N1 - Wyn, A., Davies, I. T., Cox, S. J. (2008). Simulations of two-dimensional foam rheology: localization in linear Couette flow and the interaction of settling discs. European Physical Journal E, 26 (1-2), 81-89.
Sponsorship: We thank K. Brakke for developing, dis-tributing and supporting the Surface Evolver and for providing the script to generate Voronoi input. This work benefited from discussions with D. Weaire, K. Krishan and F. Graner. Financial support is gratefully acknowledged from EPSRC (EP/D048397/1,EP/D071127/1) and the British Council Alliance programme.
PY - 2008/5
Y1 - 2008/5
N2 - 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.
AB - 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.
KW - 47.57.Bc Foams and emulsions
KW - 83.80.Iz Emulsions and foams
KW - 83.50.Ax Steady shear flows
KW - viscometric flow
UR - http://hdl.handle.net/2160/551
U2 - 10.1140/epje/i2007-10286-0
DO - 10.1140/epje/i2007-10286-0
M3 - Article
C2 - 18404249
SN - 1292-8941
VL - 26
SP - 81
EP - 89
JO - European Physical Journal E
JF - European Physical Journal E
IS - 1
ER -