Speaker
Description
Porous media, whether found in natural aquifers or engineered in industrial columns, encompass a vast range of interwoven length scales. These nested scales span more than twelve orders of magnitude—from nanometers to kilometers—making porous media one of the most striking examples of multiscale systems in nature. The central challenge in understanding fluid flow and transport in such media lies in bridging these disparate scales: how do processes initiated at the smallest scales (such as chemical reactions or microbial activity) propagate and manifest at the pore, Darcy, or reservoir scales? Conversely, how do large-scale flow patterns influence mixing, reactions, and structural organization at the microscopic level?
In this communication, we review recent advances in the study of solute mixing in porous media, with particular emphasis on how these insights illuminate the emergence of characteristic time and length scales at which concentration gradients persist, and on the implications of these scales for reactive transport processes.
| References | Tanguy Le Borgne, Joris Heyman. 2025. Fluid Deformation and Mixing in Porous Media as Drivers for Chemical and Biological Processes. Annual Review Fluid Mechanics. 58. https://doi.org/10.1146/annurev-fluid-112723-051940 |
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| Country | France |
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