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Rheology of aqueous foams

Abstract : Aqueous foams are suspensions of bubbles inside aqueous phases. Their multiphasic composition leads to a complex rheological behavior that is useful in numerous applica-tions, from oil recovery to food/cosmetic processing. Their structure is very similar to the one of emulsions, so that both materials share common mechanical properties. In particular, the presence of surfactants at the gas–liquid interfaces leads to peculiar interfacial and dissipative properties. Foam rheology has been an active research topics and is already reported in several reviews, most of them covering rheometry measurements at the scale of the foam, coupled with interpretations at the local scale of bubbles or interfaces. In this review, we start following this approach, then we try to cover the multiscale features of aqueous foam flows, emphasizing regimes where intermediate length scales need to be taken into account or regimes fast enough regarding internal time scales so that the flow goes beyond the quasi-static limit.
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Submitted on : Monday, March 9, 2015 - 8:57:50 AM
Last modification on : Thursday, January 13, 2022 - 9:32:03 PM
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Benjamin Dollet, Christophe Raufaste. Rheology of aqueous foams. Comptes Rendus de l'Academie des Sciences. Série IV, Physique, Astronomie, Elsevier, 2014, 15 (8-9), pp.731-747. ⟨10.1016/j.crhy.2014.09.008⟩. ⟨hal-01127798⟩



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