Channelization in Porous Media driven by Erosion and Deposition

Abstract

We develop and validate a new model to study simultaneous erosion and deposition in three-dimensional porous media. We study the changes of the porous structure induced by the deposition and erosion of matter on the solid surface and find that when both processes are active, channelization in the porous structure always occurs. The channels can be stable or only temporary depending mainly on the driving mechanism. Whereas a fluid driven by a constant pressure drop in general does not form steady channels, imposing a constant flux always produces stable channels within the porous structure. Furthermore we investigate how changes of the local deposition and erosion properties affect the final state of the porous structure, finding that the larger the range of wall shear stress for which there is neither erosion nor deposition, the more steady channels are formed in the structure.

Cited by in corpus (10)

• Multiscale dynamics of colloidal deposition and erosion in porous media
• The Mechanism behind Erosive Bursts in Porous Media
• Flow through time-evolving porous media: swelling and erosion
• Temporal Evolution of Flow in Pore-Networks: From Homogenization to Instability
• Clogging a Porous Medium
• Erosion of planetesimals by gas flow
• Continuum model for extraction and retention in porous media
• How fluid-mechanical erosion creates anisotropic porous media
• Modeling the Transition between Localized and Extended Deposition in Flow Networks through Packings of Glass Beads
• Modeling Multiphase Flow Through and Around Multiscale Deformable Porous Materials