how do fluent calculate energy equation?

Hi all,

I have a question : how fluent calculate energy equation? I put the energy equation in enthalpy change formulate below:

the author mentioned both enthalpy and specific heat are temperature dependent. I have defined temperature function of specific heat. However, I cann't see why enthalpy should be defined with UDF. Does the author mean enthalpy is a function of specific heat and specific heat is function of temperature. Then enthalpy is function of temperature indirectly. Therefore, I just need to define temperature dependent function of specific heat in fluent?




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