Radiation Inputs at Outflow Boundaries
In general, there are no boundary conditions for you to set at an outflow boundary. If, however, you are using the P-1 radiation model, the DTRM, the DO model, or the surface-to-surface model, you will set the Internal Emissivity and (optionally) Black Body Temperature in the Outflow panel. These parameters are described in Section 13.3.15. The default value for Internal Emissivity is 1 and the default value for Black Body Temperature is 300.
Defining Discrete Phase Boundary Conditions
If you are modeling a discrete phase of particles, you can set the fate of particle trajectories at the outflow boundary. See Section 22.13 for details.