thermal analysis of fin on ansys

salam to every one......

I am doing B.E mechanical and my final year project is related to thermal analysis of fin i have completed my first step that is first law analysis of thermodynamics. And i have achieve temperature profile on fin model.

Now i am stuck at second step that is ENTOPY AND EXERGY ANALYSIS(i.e second law of thermodynamics) ihad seached enough but ther is no feature like this. i am using follwing equation for calculatig entropy calculation

Entropy balance at node N

 SgenN:=-(Qj(Ncv-1)/(T(Ncv-1)+273))+(QN/(T(Ncv)+273))+(Qfj(Ncv)/(T(Ncv)+273))

can any body give me clu how to move furthur.with regards.....i have attach the analytical work file to make my point clear