Flow intermittency, dispersion, and correlated continuous time random walks in porous media

Pietro De Anna, Tanguy Le Borgne, Marco Dentz, Alexandre M. Tartakovsky, Diogo Bolster, Philippe Davy

Research output: Contribution to journalArticlepeer-review

Abstract

We study the intermittency of fluid velocities in porous media and its relation to anomalous dispersion. Lagrangian velocities measured at equidistant points along streamlines are shown to form a spatial Markov process. As a consequence of this remarkable property, the dispersion of fluid particles can be described by a continuous time random walk with correlated temporal increments. This new dynamical picture of intermittency provides a direct link between the microscale flow, its intermittent properties, and non-Fickian dispersion.

Original languageEnglish (US)
Article number184502
JournalPhysical review letters
Volume110
Issue number18
DOIs
StatePublished - May 1 2013
Externally publishedYes

ASJC Scopus subject areas

  • Physics and Astronomy(all)

Fingerprint

Dive into the research topics of 'Flow intermittency, dispersion, and correlated continuous time random walks in porous media'. Together they form a unique fingerprint.

Cite this