The Phase Transport in Porous Media interface (), found under the Fluid Flow > Multiphase Flow > Phase Transport branch (), is used to simulate the transport of multiple phases either in free flow or in flow through a porous medium. The interface is the same as the Phase Transport interface but it uses other defaults: a Porous Medium node is added by default, instead of a Fluid node.

The Phase Transport in Porous Media interface can be used for stationary and time-dependent analyses.

The main feature is the Porous Medium node, which provides an interface for defining the phase materials along with the transporting porous medium flow properties.

When this physics interface is added, the following default nodes are also added in the Model Builder — Porous Medium, No Flux (the default boundary condition), and Initial Values. Then, from the Physics toolbar, add other nodes that implement, for example, boundary conditions and mass sources. You can also right-click the Phase Transport in Porous Media node to select physics features from the context menu.

The rest of the settings are the same as for the Phase Transport interface.