This node can be added to pairs. It prescribes that the moisture content is continuous across the pair. Continuity is only suitable for pairs where the boundaries match. Depending on the domain conditions active in the adjacent domains, the constraint is applied either on relative humidity, vapor concentration or vapor mass fraction on boundary pairs. For continuous temperature and pressure conditions, all these constraints are equivalent.
The Discontinuous Galerkin constraints option ensures continuity of the diffusive flux. This option may work better than the
Classical constraints one when the meshes of the source and destination boundaries do not coincide.
Alternatively, select the Classical constraints option. Select the
Use weak constraints check box to replace the standard constraints with a weak implementation.
Select the Disconnect pair check box to disable the continuity condition.
) and select Advanced Physics Options.