Journal articles
Flow Intermittency, Dispersion, and Correlated Continuous Time Random Walks in Porous Media
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.
https://hal-insu.archives-ouvertes.fr/insu-00836057
Contributor : Isabelle Dubigeon Connect in order to contact the contributor
Submitted on : Wednesday, January 12, 2022 - 4:40:38 PM
Last modification on : Thursday, June 2, 2022 - 2:48:17 PM
Long-term archiving on: : Wednesday, April 13, 2022 - 11:26:12 PM
Contributor : Isabelle Dubigeon Connect in order to contact the contributor
Submitted on : Wednesday, January 12, 2022 - 4:40:38 PM
Last modification on : Thursday, June 2, 2022 - 2:48:17 PM
Long-term archiving on: : Wednesday, April 13, 2022 - 11:26:12 PM
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