Bubble sorting in a foam under forced drainage

Hutzler, Stefan; Weaire, D.; Shah, Srujal

doi:10.1080/095008300176443

Cited by 31 publications

(9 citation statements)

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“…4 remains elusive at this stage. There have been experiments with 3D foams [33] for which avalanches of rearrangements following an increase in liquid fraction have been observed, but there is no statistical data available.…”

Section: P(n) = λ Exp(−λn) (4)mentioning

confidence: 99%

Statistics and topological changes in 2D foam from the dry to the wet limit

Dunne

Bolton²,

Weaire

et al. 2017

Philosophical Magazine

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Section: P(n) = λ Exp(−λn) (4)mentioning

confidence: 99%

Statistics and topological changes in 2D foam from the dry to the wet limit

Dunne

Bolton²,

Weaire

et al. 2017

Philosophical Magazine

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“…Previous work, including experiments and simulations [7,8,9,10], show that vertical arrangements of foams have bigger and drier bubbles at the top and, smaller and wetter bubbles at the bottom. These experiments were performed for twodimensional foams of various levels of polydispersity; despite this, the results are loosely comparable to our case of a thin foam front in porous media.…”

Section: Slumpingmentioning

confidence: 99%

Foam improved oil recovery: Foam front displacement in the presence of slumping

Mas-Hernández

Grassia

Shokri

2015

Colloids and Surfaces A: Physicochemical and Engineering Aspect

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This version is available at https://strathprints.strath.ac.uk/52032/ Strathprints is designed to allow users to access the research output of the University of Strathclyde. Unless otherwise explicitly stated on the manuscript, Copyright © and Moral Rights for the papers on this site are retained by the individual authors and/or other copyright owners. Please check the manuscript for details of any other licences that may have been applied. You may not engage in further distribution of the material for any profitmaking activities or any commercial gain. You may freely distribute both the url (https://strathprints.strath.ac.uk/) and the content of this paper for research or private study, educational, or not-for-profit purposes without prior permission or charge.Any correspondence concerning this service should be sent to the AbstractFoam is often used in improved oil recovery processes to displace oil from an underground reservoir. During the process, the reservoir is flooded with surfactant, and then gas is injected to produce foam in situ, with the foam front advancing through the reservoir. Here the effect of surfactant slumping (downward movement of surfactant in relation to a lighter phase) upon the advance of a foam front is presented. Slumping which can be associated with foam drainage, coarsening and collapse, causes a rise in mobility of the foam front specifically near the top of the front. The description of a foam front displacement for an initially homogeneous foam mobility is therefore modified to account for slumping-induced inhomogeneities. Numerical solution for the front shape shows that, although slumping transiently produces a localised concave region on the otherwise convex front, this concavity has little effect on the long term front evolution. In fact in the long-time limit, a convex kink develops on the front: an analytical solution describing the convex kink agrees very well with the numerics.

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“…Those few studies that do report a bubble size distribution generally do so by photographing bubbles through the wall of the column and then sizing. For instance, Hutzler et al [5] investigated bubble sorting under forced drainage and reported bubble size distributions that were, on normalising [6], found to exhibit an approximately lognormal distribution. The foam in a beer head was found to be approximately log-normally distributed too [7].…”

Section: Introductionmentioning

confidence: 99%