Pore-scale network modeling of sharp and diffuse infiltration fronts through the addition of viscous effects

David DiCarlo & David DiCarlo
Most infiltrations of a wetting phase have an imbibition front that is diffuse at the pore-scale, allowing the common use of continuum formulations to model the macroscopic flow. But for macroscopic flow phenomena such as preferential flow, this continuum approach fails as the imbibition water front is sharp at the pore- scale. Pore-scale network models are ideal for handling sharp fronts due to their inherent discreteness, but many models produce only sharp fronts contrary to...
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