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Physics of Fluids / Volume 22 / Issue 4 / ARTICLES / Particulate, Multiphase, and Granular Flows

Phys. Fluids 22, 043302 (2010); http://dx.doi.org/10.1063/1.3364038 (5 pages)

Permeability of a bubble assembly: From the very dry to the wet limit

Florence Rouyer, Olivier Pitois, Elise Lorenceau, and Nicolas Louvet

Laboratoire de Physique des Matériaux Divisés et des Interfaces, Université Paris-Est, UMR CNRS 8108, 5 bvd Descartes, 77454 Marne la Vallée Cedex 2, France

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(Received 10 April 2009; accepted 18 February 2010; published online 6 April 2010)

Bubble assemblies offer the remarkable property of adjusting their packing fraction over three orders of magnitude, thus providing an interesting system for the study of liquid flows through granular matter. Although significant work has been done in several fields of research, e.g., foams, porous media, and suspensions, a complete set of data over such a wide range of porosity ε is still lacking. In this paper, we measure the permeability of a bubbly system in the range 0.1<ε<0.8 and we connect these new data with a recently published set obtained for foams corresponding to ε<0.2 [ E. Lorenceau et al., Eur. Phys. J. E 28, 293 (2009) ]. Moreover, measurements performed with two different surfactants, the so-called “mobile” and “nonmobile” interfaces, allow us to determine the influence of the bubbles’ surface mobility, which is proved to be a significant parameter up to ε ≈ 0.6, thus well above the bubbles packing fraction. Above ε ≈ 0.6, surface elasticity is fully mobilized over the bubbles’ surface and the behavior of rigid spheres is observed for both solutions. We show that all the permeability values obtained for the bubble assembly with “nonmobile” interfaces are properly described with the Carman–Kozeny model.

© 2010 American Institute of Physics

Article Outline

  1. INTRODUCTION
  2. FLUIDIZED BED EXPERIMENT
    1. Materials
    2. Experimental setup
    3. Permeability measurements
  3. RESULTS AND DISCUSSION
  4. CONCLUSION

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KEYWORDS and PACS

Keywords

bubbles, elasticity, flow through porous media, foams, permeability, porosity, suspensions, two-phase flow

PACS

ARTICLE DATA

Digital Object Identifier
http://dx.doi.org/10.1063/1.3364038

PUBLICATION DATA

ISSN

1070-6631 (print)  
1089-7666 (online)

Publisher

$abstract.society.value is a Member of CrossRef American Institute of Physics

For access to fully linked references, you need to log in.
    X. Yin and D. L. Koch, “Hindered settling velocity and microstructure in suspensions of solid spheres with moderate Reynolds numbers,” Phys. Fluids 19, 093302 (2007)PHFLE6000019000009093302000001.


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