Journal articles
Influence of the elastic deformation of a foam on its mobility in channels of linearly varying width
Abstract : We study foam flow in an elementary model porous medium consisting of a convergent and a divergent channel positioned side by side and possessing a fixed joint porosity. Configurations of converging or diverging channels are ubiquitous at the pore scale in porous media, as all channels linking pores possess a converging and diverging part. The resulting flow kinematics imposes asymmetric bubble deformations in the two channels, which modulate foam-wall friction and strongly impact the flux distribution. We measure, as well as quantitatively predict, the ratio of the fluxes in the two channels as a function of the channel widths by modeling pressure drops of both viscous and capillary origins. This study reveals the crucial importance of boundary-induced bubble deformation on the mobility of a flowing foam, resulting in particular in flow irreversibility
Cited literature [23 references]
https://hal-insu.archives-ouvertes.fr/insu-01068121
Contributor : Isabelle Dubigeon Connect in order to contact the contributor
Submitted on : Thursday, September 25, 2014 - 9:22:58 AM
Last modification on : Tuesday, October 19, 2021 - 7:01:33 PM
Long-term archiving on: : Friday, April 14, 2017 - 1:33:48 PM
Contributor : Isabelle Dubigeon Connect in order to contact the contributor
Submitted on : Thursday, September 25, 2014 - 9:22:58 AM
Last modification on : Tuesday, October 19, 2021 - 7:01:33 PM
Long-term archiving on: : Friday, April 14, 2017 - 1:33:48 PM
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