Non-equilibrium dynamics of fluids in disordered media Autors/ores Jordi Ortín Nonlinear Physics Group, Department of Condensed Matter Physics, University of Barcelona, Barcelona, Catalonia. Universitat de Barcelona Institute of Complex Systems (UBICS), University of Barcelona, Barcelona, Catalonia. Paraules clau: fluid flows in disordered media, Darcy’s law, drainage and imbibition, scale invariance, fluctuations and intermittency Resum Fluid flows in disordered media are present in natural and industrial processes such as soil irrigation and secondary oil recovery. These flows display complex spatial and temporal non-equilibrium dynamics arising from the heterogeneities of the medium. Average magnitudes are not sufficient to allow the complexity of their dynamics to be captured. Deeper insight can be gained from a scale-dependent statistical analysis of the fluctuations. Here we introduce the basic laws governing fluid flows in disordered media. Focusing on two-fluid displacements with a well-defined interface, we discuss several non-equilibrium dynamic features that include scale-invariance, avalanches, non-Gaussian fluctuations, and intermittency. [Contrib Sci 11(2): 189-198 (2015)]Keywords: fluid flows in disordered media · Darcy’s law · drainage and imbibition · scale invariance · fluctuations and intermittency Descàrregues PDF (English) Número Vol. 11 Núm. 2 (2015) Secció Soft matter Llicència This work, including photographs and other illustrations, unless the contrary is indicated, is subject to an Attributions–Non-Commercial–No Derivative Works 3.0 Creative Commons License, the full text of which can be consulted at http://creativecommons.org/licenses/by-nc-sa/3.0/. You are free to share, copy, distribute and transmit the work provided that the author is credited and reuse of the material is restricted to non-commercial purposes only and that no derivative works are created from the original material.
