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Foam clogging.

F Rouyer1, B Haffner, N Louvet

  • 1Université Paris Est, Laboratoire Navier, UMR 8205 CNRS - École des Ponts ParisTech - IFSTTAR 5 bd Descartes, 77454 Marne-la-Vallée Cedex 2, France.

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Summary
This summary is machine-generated.

Aqueous foams clog more efficiently than solid porous media due to interface deformation and mobility, allowing larger particles and reducing permeability. This study quanties foam clogging with particulate loading.

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Area of Science:

  • Colloid and Surface Science
  • Fluid Dynamics
  • Materials Science

Background:

  • Aqueous foams are ubiquitous in industrial processes, yet their susceptibility to clogging by particulate matter remains a critical concern.
  • Understanding foam clogging mechanisms is essential for optimizing processes involving foam flow and filtration.

Purpose of the Study:

  • To quantify the clogging propensity of aqueous foams as a function of particulate loading and particle-to-bubble size ratio.
  • To investigate the hydrodynamic resistance of a single foam node with a trapped particle.
  • To compare the clogging behavior of foams with traditional solid porous media.

Main Methods:

  • Experimental measurement of foam permeability under varying particulate loading conditions.
  • Investigation of particle-to-bubble size ratio effects on clogging.
  • Experimental and numerical analysis of hydrodynamic resistance at the single foam node scale.

Main Results:

  • Aqueous foams demonstrate a higher tendency to clog compared to solid porous media.
  • Foam interface deformation facilitates the incorporation of larger particles into the interstitial network.
  • Interfacial mobility significantly reduces the effective permeability of the foam.

Conclusions:

  • The unique properties of foam interfaces (deformation and mobility) enhance clogging efficiency.
  • Findings provide critical insights into foam behavior in particulate-laden flows, relevant for process design and control.