Video: Rayleigh Taylor instability in a foam film

Shabalina, Evgenia; Bussonnière, Adrien; Cavelier, Mathilde; Bérut, Antoine; Jalmes, Arnaud Saint; Cantat, Isabelle

doi:10.1103/aps.dfd.2018.gfm.v0035

71th Annual Meeting of the APS Division of Fluid Dynamics - Gallery of Fluid Motion 2018

DOI: 10.1103/aps.dfd.2018.gfm.v0035

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Video: Rayleigh Taylor instability in a foam film

Evgenia Shabalina¹,

Adrien Bussonnière²,

Mathilde Cavelier³

et al.

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2020

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“…A single Frankel's film is thus observed at later times in the right film, close to the bottom meniscus. The Frankel's film is however continuously produced at the top, but it falls down after its extraction from the meniscus and merges with the Frankel's film produced at the bottom (see [17]). The downwards motion of patches of thick films induces recirculations in the central part of the stretched film, thus forbidding reliable velocity measurements in this lateral film.…”

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Dynamical Coupling between Connected Foam Films: Interface Transfer across the Menisci

et al. 2020

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The highly confined flow of the liquid phase, trapped between the gas bubbles, is at the origin of the large effective viscosity of the liquid foams. Despite the industrial relevance of this complex fluid, the foam viscosity remains difficult to predict, because of the lack of flow characterization at the bubble scale. Using an original deformable frame, we provide the first experimental evidence of the interface transfer between a compressed film (resp. a stretched film) and its first neighbour, across their common meniscus. We measure this transfer velocity, which is a key boundary condition for local flows in foams. We also show the dramatic film thickness variation induced by this interface transfer, which may play an important role in the film thickness distribution of a 3D foam sample. arXiv:1902.07076v1 [cond-mat.soft]

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Dynamical Coupling between Connected Foam Films: Interface Transfer across the Menisci

et al. 2020

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Video: Rayleigh Taylor instability in a foam film

Cited by 1 publication

References 0 publications

Dynamical Coupling between Connected Foam Films: Interface Transfer across the Menisci

Dynamical Coupling between Connected Foam Films: Interface Transfer across the Menisci

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