, is evaluated in a straightforward fashion using the stress tensor calculated as in the Segregated Flow model formulation.
The viscous work term at a face, , is evaluated in a straightforward fashion using the stress tensor calculated as in the Segregated Flow model formulation.
In porous regions, an additional heat source is added as follows:
| (111) |
where 
is the porous resistance tensor and 
is the volume porosity of the porous medium.