Anomalous dynamics of capillary rise in porous media

Type
Article

Authors
Shikhmurzaev, Yulii D.
Sprittles, James E.

KAUST Grant Number
KUK-C1-013-04

Date
2012-07-09

Abstract
The anomalous dynamics of capillary rise in a porous medium discovered experimentally more than a decade ago is described. The developed theory is based on considering the principal modes of motion of the menisci that collectively form the wetting front on the Darcy scale. These modes, which include (i) dynamic wetting mode, (ii) threshold mode, and (iii) interface depinning process, are incorporated into the boundary conditions for the bulk equations formulated in the regular framework of continuum mechanics of porous media, thus allowing one to consider a general case of three-dimensional flows. The developed theory makes it possible to describe all regimes observed in the experiment, with the time spanning more than four orders of magnitude, and highlights the dominant physical mechanisms at different stages of the process. © 2012 American Physical Society.

Citation
Shikhmurzaev YD, Sprittles JE (2012) Anomalous dynamics of capillary rise in porous media. Phys Rev E 86. Available: http://dx.doi.org/10.1103/PhysRevE.86.016306.

Acknowledgements
This publication was based on work supported in part by Award No. KUK-C1-013-04, made by King Abdullah University of Science and Technology (KAUST).

Publisher
American Physical Society (APS)

Journal
Physical Review E

DOI
10.1103/PhysRevE.86.016306

PubMed ID
23005524

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