Microstructure of two-phase flow and mass transfer in porous systems and packed beds

A lattice model of the pore space of a microsphere packing and a method for calculating the microstructure of a two-phase flow, taking into account the topology of pores, are proposed. The sequence of filling the pore contractions and expansions with drainage and imbibition of phases and the dependence of capillary pressure on saturation of phases and the coefficient of longitudinal dispersion for transfer of a dissolved substance were obtained under conditions of the determining influence of capillary forces.