CHT issue
 

I have only solids in my model with source term for enthalpy. No other BCs. My problem is that, in solver parameters, flow variables u,v,w etc etc are on (clickble) but temperature is off (not clickble).

Second problem is that my enthalpy source term buttom is switching off oncei quit out of the prostar. Thats why my run is having zero reciduals at first iteration and comes out with convergence criteria satisfied.