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Invasion Percolation With A Hardening Interface Under Gravity

Author

Listed:
  • C. L. N. OLIVEIRA

    (Departamento de Física, Universidade Federal do Ceará, Caixa Postal 6030, Campus do Pici, 60455-760 Fortaleza, Ceará, Brazil;
    Computational Physics, IfB, ETH Zürich, Hönggerberg, 8093 Zürich, Switzerland)

  • F. K. WITTEL

    (Computational Physics, IfB, ETH Zürich, Hönggerberg, 8093 Zürich, Switzerland)

  • J. S. ANDRADE

    (Departamento de Física, Universidade Federal do Ceará, Caixa Postal 6030, Campus do Pici, 60455-760 Fortaleza, Ceará, Brazil;
    Computational Physics, IfB, ETH Zürich, Hönggerberg, 8093 Zürich, Switzerland)

  • H. J. HERRMANN

    (Departamento de Física, Universidade Federal do Ceará, Caixa Postal 6030, Campus do Pici, 60455-760 Fortaleza, Ceará, Brazil;
    Computational Physics, IfB, ETH Zürich, Hönggerberg, 8093 Zürich, Switzerland)

Abstract

We propose a modified Invasion Percolation (IP) model to simulate the infiltration of glue into a porous medium under gravity in 2D. Initially, the medium is saturated with air and then invaded by a fluid that has a hardening effect taking place from the interface towards the interior by contact with the air. To take into account that interfacial hardening, we use an IP model where capillary pressures of the growth sites are increased with time. In our model, if a site stays for a certain time at interface, it becomes a hard site and cannot be invaded anymore. That represents the glue interface becoming hard due to exposition with the air. Buoyancy forces are included in this system through the Bond number which represents the competition between the hydrostatic and capillary forces. We then compare our results with results from literature of non-hardening fluids in each regime of Bond number. We see that the invasion patterns change strongly with hardening while the non-hardening behavior remains basically not affected.

Suggested Citation

  • C. L. N. Oliveira & F. K. Wittel & J. S. Andrade & H. J. Herrmann, 2010. "Invasion Percolation With A Hardening Interface Under Gravity," International Journal of Modern Physics C (IJMPC), World Scientific Publishing Co. Pte. Ltd., vol. 21(07), pages 903-914.
    • Handle: RePEc:wsi:ijmpcx:v:21:y:2010:i:07:n:s0129183110015555
    DOI: 10.1142/S0129183110015555
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