Free stream temperature in convective bc's in Fluent

[vicky vivek]

I'm trying to solve the case of a fluid flow inside a tube using CFD fluent solver with convective bc for fluid side surface of the tube.
As the boundary conditions take both inlet and free stream temperatures along with velocity at the inlet, i am confused with values of to be given for inlet and free stream temperatures. i am clear with the value of inlet temperature. It will be very useful for me if anybody helps me in taking appropriate value for free stream temperature and physical concept behind it in the case said above

 

[Greg Bernhardt]

I'm sorry you are not generating any responses at the moment. Is there any additional information you can share with us? Any new findings?