Moisture Content
Use this node to specify the relative humidity on interior and exterior boundaries.
Pair Selection
If this node is selected from the Pairs menu, choose the pair on which to apply this condition. A pair has to be created first. See Identity and Contact Pairs in the COMSOL Multiphysics Reference Manual for more details.
Moisture Content
The equation for this condition is , where is the prescribed relative humidity on the boundary. For User defined, enter a value or expression for the Relative humidity . The default value is 0.5. Else, select an Ambient relative humidity defined in an Ambient Thermal Properties node under Definitions.
Constraint Settings
To display this section, click the Show button () and select Advanced Physics Options. Select the Use weak constraints check box to replace the standard constraints with a weak implementation.
Location in User Interface
Context menus
Moisture Transport in Air>Moisture Content
Moisture Transport in Building Materials>Moisture Content
Moisture Transport in Air>Pairs>Moisture Content
Moisture Transport in Building Materials>Pairs>Moisture Content
Ribbon
Physics Tab with interface as Moisture Transport in Air or Moisture Transport in Building Materials selected:
Boundaries>Moisture Content
Pairs>Moisture Content