Viscosity of particulate soap films : approaching the jamming of 2D capillary suspensions
| Autor: | Florence Rouyer, Yousra Timounay |
|---|---|
| Přispěvatelé: | Laboratoire Navier (navier umr 8205), Institut Français des Sciences et Technologies des Transports, de l'Aménagement et des Réseaux (IFSTTAR)-École des Ponts ParisTech (ENPC)-Centre National de la Recherche Scientifique (CNRS) |
| Jazyk: | angličtina |
| Rok vydání: | 2017 |
| Předmět: |
Materials science
Capillary action PARTICULE Jamming SUSPENSION CHIMIQUE 02 engineering and technology 2D SUSPENSION Radial distribution function 01 natural sciences Physics::Fluid Dynamics Viscosity INTERFACIAL VISCOSITY 0103 physical sciences 010306 general physics PARTICULATE FILM [SPI.FLUID]Engineering Sciences [physics]/Reactive fluid environment General Chemistry Mechanics VISCOSITE 021001 nanoscience & nanotechnology Condensed Matter Physics Capillary number Condensed Matter::Soft Condensed Matter Classical mechanics Particle image velocimetry Particle Soap film LIQUIDE 0210 nano-technology VISCOSITY |
| Zdroj: | Soft Matter Soft Matter, Royal Society of Chemistry, 2017, 13 (18), pp. 3449-3456. ⟨10.1039/C7SM00090A⟩ |
| ISSN: | 1744-683X 1744-6848 |
| DOI: | 10.1039/C7SM00090A⟩ |
| Popis: | We compute the effective viscosity of particulate soap films thanks to local velocity fields obtained by Particle Image Velocimetry (PIV) during film retraction experiments. We identify the jamming of these 2D capillary suspensions at a critical particle surface fraction (0.84) where effective viscosity diverges. Pair correlation function and number of neighbors in contact or close to contact reveal the cohesive nature of this 2D capillary granular media. The experimental 2D dynamic viscosities can be predicted by a model considering viscous dissipation at the liquid interfaces induced by the motion of individual particles.; We compute the effective viscosity of particulate soap films thanks to local velocity fields obtained by Particle Image Velocimetry (PIV) during film retraction experiments. We identify the jamming of these 2D capillary suspensions at a critical particle surface fraction ([similar, equals]0.84) where effective viscosity diverges. Pair correlation function and number of neighbors in contact or close to contact reveal the cohesive nature of this 2D capillary granular media. The experimental 2D dynamic viscosities can be predicted by a model considering viscous dissipation at the liquid interfaces induced by the motion of individual particles. |
| Databáze: | OpenAIRE |
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