The Flux Discontinuity node represents a discontinuity in the species flux across an interior boundary:
where the value of N0,i specifies the size of the flux jump, evaluated from the up to the down side of the boundary. This boundary condition is only available on interior boundaries.
Specify the jump in species flux, using a positive value for increasing flux when going from the down to the up side of the boundary. The normal direction (nx,ny,nz) (
(nr,nz) in axisymmetric models) points in the direction from the downside toward the upside of an internal boundary and can be plotted for visualization.
Select the check boxes for the species to specify a Flux discontinuity N0 (SI unit: mol/(m
2·s)) and enter a value or expression for the mass flux jump in the corresponding field. To use another boundary condition for a specific species, click to clear the check box for that species’ flux discontinuity.
