2.4.1 Fluxes Through Boundaries (Section 20.1)

The second bullet item should have a note added to it, such that it reads:

• The total heat transfer rate through a boundary is computed by summing the total heat transfer rate, $q = q_{c} + q_{r}$, over the faces, where $q_c$ is the convective heat transfer rate and $q_{r}$ is the radiation heat transfer rate. The computation of the heat transfer through the face depends on the specified boundary condition. For example, the conduction heat transfer on a constant-temperature wall face would be the product of the thermal conductivity with the dot product of the area projection and the temperature gradient. For flow boundaries, the total heat transfer rate is the flow rate of the conserved quantity. Depending on the models that are being used, the total heat transfer rate may include the convective flow of sensible or total enthalpy, diffusive flux of energy, etc. Note that the reference temperature in all enthalpy calculations is always 298.15K

  Note that in the case of moving walls with compressible flow, the pressure work is also added while reporting heat flux.