A multi-scale computational model for multiphase flow in porous media

Computational models of multiphase flow in porous media can be developed to describe processes at several different length scales. These include traditional continuum-scale models, ranging in application from the laboratory scale to the field scale, and pore-scale models. Each of these models may be seen as part of a scale hierarchy. As such, they may be used in a hierarchical sequence with output from smaller-scale models serving as input to larger-scale models. This gives rise to the concept of multi-scale computational models. A combination of pore-scale and field-scale models may be seen as an example of a multi-scale model. Such a model fits naturally into parallel computing environments, and may provide a computationally feasible approach for realistic incorporation of material heterogeneities in multiphase flow simulations.