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RHEOLOGIE ET IMAGERIE DES ECOULEMENTS 2D DE MOUSSE
approche expérimentale, numérique et théorique

Abstract : This work is related to the field of liquid foams rheology. Liquid foams are an example of complex fluid, with a behaviour between an elastic solid and a viscous liquid. The structure (bubbles) can be easily seen, especially in 2D (one bubble monolayer), making the foam a model system. We present here how we create a flow, both experimentally (Hele-Shaw cell) and numerically (Monte Carlo simulations). Flow velocity and liquid fraction can be easily changed. The foam is constrained to flow around an obstacle, making the flow heterogeneous. The state of the structure (bubbles elongation, rearrangements) is measured and related to the mechanical properties. We test a modelling based on continuous equations.
Effects due to the confinement are observed: friction on the plates, instability.
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https://tel.archives-ouvertes.fr/tel-00193248
Contributor : Christophe Raufaste <>
Submitted on : Monday, December 3, 2007 - 9:37:58 AM
Last modification on : Friday, October 23, 2020 - 4:48:46 PM
Long-term archiving on: : Monday, April 12, 2010 - 5:47:32 AM

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  • HAL Id : tel-00193248, version 1

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Christophe Raufaste. RHEOLOGIE ET IMAGERIE DES ECOULEMENTS 2D DE MOUSSE
approche expérimentale, numérique et théorique. Dynamique des Fluides [physics.flu-dyn]. Université Joseph-Fourier - Grenoble I, 2007. Français. ⟨tel-00193248⟩

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