Foams in a rotating drum: An analogy with granular materials

Foam flows; Granular matter; Hele-Shaw flows; Elasticity; Materials properties; External strains; Foam behaviors; Foam flow; Foam properties; Hele-Shaw cells; Hele-Shaw flow; Surfactant solution; Granular materials

Abstract :

[en] Rotating drums are usually used to study the flowing properties of granular materials. Here, we report experiments performed in a drum made of a circular Hele-Shaw cell filled with a monodisperse foam and its surfactant solution. The cell is placed vertically and rotated around its center with an angular velocity ω. The rotation of the cell modifies the foam properties and therefore influences its response to the external strain. The observed foam behavior is similar to granular media in several aspects. Using tools developed for granular materials, we characterize the foam evolution in terms of a dimensionless viscous number I f and we compare the foam rheology to the theory developed for the immersed granular material rheology. © 2015 Elsevier B.V.

Disciplines :

Physics

Author, co-author :

Bronfort, Ariane ; Université de Liège > Département de physique > Optofluidique

Caps, Hervé ; Université de Liège > Département de physique > Optofluidique

Title :

Foams in a rotating drum: An analogy with granular materials

Publication date :

2015

Journal title :

Colloids and Surfaces A: Physicochemical and Engineering Aspects

ISSN :

0927-7757

eISSN :

1873-4359

Publisher :

Elsevier

Peer reviewed :

Peer Reviewed verified by ORBi

Available on ORBi :

since 07 February 2017

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