Numerical modeling of the transport of fluid in porous media can be a challenge, but FLOW-3D includes many valuable features for the solution of problems involving porous materials. The FAVOR™ technique contains necessary porosity variables to enable the user to represent a continuous porous media. FLOW-3D allows users to simulate both saturated and unsaturated flow conditions. A power law relation allows users to model the non-linear relationship between capillary pressure and saturation in the unsaturated flow conditions.
Separate filling and draining curves can be used to model the phenomenon of hysteresis. Different porosity, permeability and wettability properties can be assigned to different obstacles, even when in direct contact with one another. Permeability can be specified based on flow direction, enabling the user to model anisotropic behavior of porous media. Heat transfer between fluid and the porous media may be taken into account.
Simulation of a drop absorbed into a porous medium