[New_at_Fluent]

I have a simple 2d model of a steam chamber with a vertical tube running through it. The tube has cold water (275K) running through it. The chamber is full of steam(373K). I set the initial conditions for the steam as an ideal gas. I also set the boundary condition for the steam to have source energy. I want to find the relationship of Temperature & Pressure of the steam with respect to time using fluent.

The results I've been getting has the temperature of the steam increasing with time (which is the opposite for what should happen). How do I set the initial conditions for the steam to have a temperature of 373K. (When I simply set the boundary condition of the steam to a fixed value of 373K the temperature of the steam does not change when I iterate.

[herntan]

cannot understand what u trying to say. Explain with Picture plz.
There is no initial condition of "Ideal Gas" . Ideal gas is means a compressible calculation.