Imbibition in layered systems of packed beads

ORAL

Abstract

It is well known that during imbibition of uniform porous media, the penetration distance increases as the square root of time. However, this ``diffusive'' result is not observed when the spatial arrangement of the beads is not uniform. We investigate two specific cases of inhomogeneity: (i) a system made with two layers each of a uniform bead size, (ii) a gradient of permeability. In both cases, deviations from the ``diffusive'' dynamics are observed and explained theoretically.

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Authors

  • Laetitia Sangne

    Harvard University - School of Engineering and Applied Sciences

  • Mathilde Reyssat

    Harvard University - School of Engineering and Applied Sciences

  • Ernst Van Nierop

    Harvard University - School of Engineering and Applied Sciences, Harvard Univ.

  • Howard A. Stone

    Harvard University - School of Engineering and Applied Sciences, SEAS - Harvard University, Harvard Univ., Harvard University, SEAS, Harvard University, School of Engineering and Applied Sciences, Harvard University