Experimental evidence of flow destabilization in a 2D bidisperse foam

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dc.creatorCantat, Isabelle
dc.creatorPoloni, Celine
dc.creatorDelannay, Renaud
dc.date2006-04-07
dc.date.accessioned2026-07-07T07:05:21Z
dc.date.available2026-07-07T07:05:21Z
dc.descriptionLiquid foam flows in a Hele-Shaw cell were investigated. The plug flow obtained for a monodisperse foam is strongly perturbed in the presence of bubbles whose size is larger than the average bubble size by an order of magnitude at least. The large bubbles migrate faster than the mean flow above a velocity threshold which depends on its size. We evidence experimentally this new instability and, in case of a single large bubble, we compare the large bubble velocity with the prediction deduced from scaling arguments. In case of a bidisperse foam, an attractive interaction between large bubbles induces segregation and the large bubbles organize themselves in columns oriented along the flow. These results allow to identify the main ingredients governing 2D polydisperse foam flows.
dc.identifierhttps://arxiv.org/abs/cond-mat/0604199
dc.identifierhttp://arxiv.org/abs/cond-mat/0604199
dc.identifierPhysical Review E 73 (2006) 011505
dc.identifierdoi:10.1103/PhysRevE.73.011505
dc.identifier.urihttp://salesiana.dossiersoluciones.com/handle/123456789/109640
dc.subjectSoft Condensed Matter
dc.titleExperimental evidence of flow destabilization in a 2D bidisperse foam
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