Eulerian-Boiling model: which UDF for Tsat?
 

I am trying to set up a boiling model and I would like to make a UDF for the saturation temperature. In the UDF fluent guide I could not find which kind of UDF I should use for that. All the other parameters in the boiling model can be defined with DEFINE_BOILING_PROPERTY, but apparently not the saturation temperature.

I have to write a saturation temperature in function of the vapor phase volume fraction C_VOF.

Thanks in advance!