Fingered infiltration of a wetting fluid through a porous network is a widely studied subject in the field of fluid mechanics. However, the effect of this heterogeneous percolation on the response of granular materials, in particular fine-grained soils, is a poorly investigated and badly understood topic which deserves deep analysis, considering, among others, possible applications in soil remediation and underground energy storage. This paper presents a first application of a new formulation of unsaturated poromechanics based on a phase field approach that allows to characterize on the one hand the occurrence of fingering hydraulic instabilities and on the other one to capture their effects on the irreversible, and possible unstable, deformation of the solid skeleton. The envisaged application concerns the behavior of fine-grained soils whose dilatant/contractant behavior is more and more attracting the interest of the scientific community both in the fields of experimental research and numerical modeling.

Fingering and strain localization in porous media during imbibition processes / Zaim, M.; Ommi, S. H.; Collin, F.; Kotronis, P.; Sciarra, G.. - In: INTERNATIONAL JOURNAL FOR NUMERICAL METHODS IN ENGINEERING. - ISSN 1097-0207. - (2023). [10.1002/nme.7261]

Fingering and strain localization in porous media during imbibition processes

Ommi S. H.
Secondo
Investigation
;
2023

Abstract

Fingered infiltration of a wetting fluid through a porous network is a widely studied subject in the field of fluid mechanics. However, the effect of this heterogeneous percolation on the response of granular materials, in particular fine-grained soils, is a poorly investigated and badly understood topic which deserves deep analysis, considering, among others, possible applications in soil remediation and underground energy storage. This paper presents a first application of a new formulation of unsaturated poromechanics based on a phase field approach that allows to characterize on the one hand the occurrence of fingering hydraulic instabilities and on the other one to capture their effects on the irreversible, and possible unstable, deformation of the solid skeleton. The envisaged application concerns the behavior of fine-grained soils whose dilatant/contractant behavior is more and more attracting the interest of the scientific community both in the fields of experimental research and numerical modeling.
2023
fingering; instability; phase field approach; plastic deformation; poromechanics
01 Pubblicazione su rivista::01a Articolo in rivista
Fingering and strain localization in porous media during imbibition processes / Zaim, M.; Ommi, S. H.; Collin, F.; Kotronis, P.; Sciarra, G.. - In: INTERNATIONAL JOURNAL FOR NUMERICAL METHODS IN ENGINEERING. - ISSN 1097-0207. - (2023). [10.1002/nme.7261]
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Utilizza questo identificativo per citare o creare un link a questo documento: https://hdl.handle.net/11573/1683956
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