Flow in a Pipe
 

Hi
I'm simulating the flow through a Pipe in 3d. The fluid is water. Boundary conditions are velocity inlet at the inlet, constant flux for the wall and outflow for the outlet. simulation for momentum equation works fine but it seems there is no change in temperature. temperature inside Pipe is constant and equal to temperature at inlet (300k).
Averaged nuslet number doesn't match with the experimental equations.
can anybody help me?
thanks

Firstly make sure that setting up in BC you didn't made any mistake. I would suggest trying to increase heat flux. If you have 100 make it bigger like 1000 or 10000 and check if the outflow temperature will change.

I increased heat flux and it worked. Thank you very much.