Adding an energy source term to a phase with reactions
 

Hi all,

I'm using a VOF method with species transport reaction model, say:
A+B-->C+D
A+E-->F
in polymer phase, which takes up air phase at the same time. And I'm adding a source term to the polymer phase, however, when I change the phase to polymer in cell zone condition, and click on edit, it only allows me to add mass source term, and source term of specific reactants and products (B,C,D,E,F). Only when I changed the phase to mixture can I add an energy source term. But my energy source term only occurs in the polymer phase. What should I do to add the energy source term only to the polymer phase? Can anyone help me?