The Inflow node adds a boundary condition for an inflow boundary, where the concentration for all species is specified in the manner of
.
Specify the concentration ci (SI unit: mol/m
3) of each species individually by entering a value or expression in the corresponding field.
The Concentration constraint is selected by default. This setting constrains the concentration values on the boundary by the use of point-wise constraints.
Flux (Danckwerts) can be advantageous when high reaction rates are anticipated in the vicinity to the inlet. This uses a flux boundary condition based on the velocity across the boundary and the concentration values.
) and select