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Journal of Materials Science

, Volume 42, Issue 16, pp 6541–6548 | Cite as

Flow through an evolving porous media—compressed foam

  • D. A. Graf von der Schulenburg
  • M. Paterson-Beedle
  • L. E. Macaskie
  • L. F. Gladden
  • M. L. Johns
Article

Abstract

Magnetic Resonance Imaging (MRI) techniques were applied such that they were able to provide simultaneously both 3D pore-scale velocity and microstructural data for polyurethane foam with water flowing through it. This necessitated the use of velocity gating of the relevant images in order to describe accurately the position of the solid foam walls; a pore thinning algorithm was used to differentiate individual pores within the foam pore space where minima in hydraulic radius defined pore boundaries. This methodology was then used to explore the effect of foam compression on both pore geometric characteristics and pore-scale velocity fields. Pore volumes were seen to decrease from 3.27 to 0.96 mm3 as porosity was reduced from 0.84 to 0.61 and increased flow channelling, adjacent to the containing cylinder, was observed. The velocity fields were compared with corresponding Lattice Boltzmann flow simulations with good agreement being produced.

Keywords

Foam Lattice Boltzmann Method Lattice Boltzmann Compression Stage Foam Structure 
These keywords were added by machine and not by the authors. This process is experimental and the keywords may be updated as the learning algorithm improves.

Notes

Acknowledgements

The authors wish to acknowledge Dr. Peter R. Laity for acquiring the X-ray image of the foam, Reticel, Belgium for supplying the foam and the EPSRC for financial support.

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Copyright information

© Springer Science+Business Media, LLC 2007

Authors and Affiliations

  • D. A. Graf von der Schulenburg
    • 1
  • M. Paterson-Beedle
    • 2
  • L. E. Macaskie
    • 2
  • L. F. Gladden
    • 1
  • M. L. Johns
    • 1
  1. 1.Department of Chemical EngineeringUniversity of CambridgeCambridgeUK
  2. 2.School of BioscienceUniversity of BirminghamBirminghamUK

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