flow is the most common application for network
modeling. The reason is that multiphase processes tend
to depend strongly on both microstructure and surface wettability,
which precludes continuum approaches from capturing first-principles behavior.
While network modeling is not rigorous,
it has proved to be a
valuable intermediate-scale approach, particularly for modeling capillary pressure behavior and relative
permeability. Under many conditions, these two phenomena are insensitive to detailed interface behavior
but do depend on pore-scale heterogeneity and pore structure --
factors that are captured effectively by network models.
Current multiphase research topics for the consortium
include improved techniques for modeling viscous
multiphase flows, issues related to interface stability
and phase trapping, quantifying the role of wetting
films and channels on transport, and developing
techniques for imaged-based modeling of multiphase flow.