Enter a value or expression for an optional mass source (or sink) Source term Qm (SI unit: kg/(m3·s)). This term accounts for mass deposit or mass creation within porous domains. The physics interface assumes that the mass exchange occurs at zero velocity.

A correction factor (Bruggeman, No Correction, or User defined) to the mass transport parameters (defined in the Transport Properties node) can be applied for the porous domain. Species diffusivities and mobilities are automatically adjusted by the porous media corrections. For User defined enter a value or expression for the Conversion factor feff. The default is 1. Species diffusivities and mobilities are automatically adjusted by the porous media corrections.