Generalized network modeling of capillary-dominated two-phase flow.

摘要: We present a generalized network model for simulating capillary-dominated two-phase flow through porous media at the pore scale. Three-dimensional images of space are discretized using network-described in companion paper [A. Q. Raeini, B. Bijeljic, and M. J. Blunt, Phys. Rev. E 96, 013312 (2017)2470-004510.1103/PhysRevE.96.013312]-which comprises pores that divided into smaller elements called half-throats subsequently corners. Half-throats define connectivity coarsest level, connecting each to its neighboring from their narrower ends, while corners crevices. The different levels accurate calculation entry pressures, fluid volumes, conductivities obtained direct simulation on underlying image. This discusses is used compute averaged properties network, including relative permeability capillary pressure. validate finite-volume simulations synthetic geometries, then comparison predictions with conventional pore-network experimental measurements literature.