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Dispersive transport dynamics in porous media emerge from local correlations

Author

Listed:
  • Felix J. Meigel

    (Max Planck Institute for Dynamics and Self-Organisation
    Max Planck Institute for the Physics of Complex Systems)

  • Thomas Darwent

    (Nottingham Trent University)

  • Leonie Bastin

    (Max Planck Institute for Dynamics and Self-Organisation)

  • Lucas Goehring

    (Nottingham Trent University)

  • Karen Alim

    (Max Planck Institute for Dynamics and Self-Organisation
    Technische Universität München)

Abstract

Understanding and controlling transport through complex media is central for a plethora of processes ranging from technical to biological applications. Yet, the effect of micro-scale manipulations on macroscopic transport dynamics still poses conceptual conundrums. Here, we demonstrate the predictive power of a conceptual shift in describing complex media by local micro-scale correlations instead of an assembly of uncorrelated minimal units. Specifically, we show that the non-linear dependency between microscopic morphological properties and macroscopic transport characteristics in porous media is captured by transport statistics on the level of pore junctions instead of single pores. Probing experimentally and numerically transport through two-dimensional porous media while gradually increasing flow heterogeneity, we find a non-monotonic change in transport efficiency. Using analytic arguments, we built physical intuition on how this non-monotonic dependency emerges from junction statistics. The shift in paradigm presented here broadly affects our understanding of transport within the diversity of complex media.

Suggested Citation

  • Felix J. Meigel & Thomas Darwent & Leonie Bastin & Lucas Goehring & Karen Alim, 2022. "Dispersive transport dynamics in porous media emerge from local correlations," Nature Communications, Nature, vol. 13(1), pages 1-9, December.
    • Handle: RePEc:nat:natcom:v:13:y:2022:i:1:d:10.1038_s41467-022-33485-5
    DOI: 10.1038/s41467-022-33485-5
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    References listed on IDEAS

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    1. L. Gammaitoni & P. Hänggi & P. Jung & F. Marchesoni, 2009. "Stochastic Resonance: A remarkable idea that changed our perception of noise," The European Physical Journal B: Condensed Matter and Complex Systems, Springer;EDP Sciences, vol. 69(1), pages 1-3, May.
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