This feature is available when the Volatilization in partially saturated porous media check box is selected on the
Settings window for the physics interface.
Use the boundary condition to model a thin layer through which mass is transported by volatilization only. To set up the node, specify the layer thickness and the atmospheric concentration of each species in the thin layer for each transported species.
Enter a Layer thickness ds and the atmospheric concentration for each species. The
Gas diffusion coefficient DG,c (SI unit: m
2/s) and the
Volatilization coefficient
kG,c (dimensionless) for each species are taken from the adjacent
Partially Saturated Porous Media domain.