The Thin Barrier boundary condition models interior permeable walls, membranes, geotextiles, or perforated plates as thin permeable barriers. The
Thin Barrier boundary condition can only be applied on interior boundaries.
Enter a value or expression for the Thickness db (SI unit: m, the default is 0.1 m) and for the
Permeability κb (SI unit: m
2). The default
Permeability κb uses the value
From material. For
User defined select
Isotropic to define a scalar value or
Diagonal,
Symmetric, or
Full to define a tensor value and enter another value or expression in the field or matrix.