Open Boundary
This feature is only available in a limited set of add-on products. See
http://www.comsol.com/products/specifications/
for more details on availability.
Use this node to set up mass transport across boundaries where both convective inflow and outflow can occur. Use this boundary condition to specify an exterior species concentration on parts of the boundary where fluid flows into the domain. A condition equivalent to the
Outflow
node applies to the parts of the boundary where fluid flows out of the domain.
The direction of the flow across the boundary is typically calculated by a fluid flow interface and is provided as a model input to the Transport of Diluted Species interface.
Exterior Concentration
Enter a value or expression for the
Exterior concentration
.