[Opaque]

Dear Alek,

I am bit puzzled by your question. What heat transfer model are you using Thermal Energy, or Total Energy ?

If you are using the Thermal Energy model, I wonder what are you trying to achieve? What type of material are you using ? incompressible ? I would suggest to contact ANSYS support and check if there is already a mechanism to activate such term.

In the case of the Total Energy model, CFX already include the pressure gradient term; therefore, you may be double accounting such effect.

Still puzzled