Flux Discontinuity
The Flux Discontinuity node represents a discontinuity in the mass flux across an interior boundary:
where the value of N0 specifies the size of the flux jump evaluated from the down to the upside of the boundary.
Flux Discontinuity
Specify the jump in species mass flux. Use a positive value for increasing flux when going from the downside to the upside of the boundary. The boundary normal points in the direction from the downside to the upside of an interior boundary and can be plotted for visualization.
Select the Species check boxes to specify a flux discontinuity, and enter a value or expression for the Flux discontinuity N0 (SI unit: kg/(m2·s)) in the corresponding field, N0, w1 for example. To use a different boundary condition for a specific species, click to clear the check box for the flux discontinuity of that species.