Heat transfer through pipe wall
I am trying to simulate in 3D a copper pipe passing through water maintained at 3 degrees Celsius with air passing through the pipe. The air at inlet is 20 degrees and enters at 0.3m/s.
It can be assumed the pipe wall temperature is 3 degrees but when I try create this simulation the pressure outlet requires me to define a temperature when this is actually what I am trying to calculate!
What is the best way to set this up, I have tried modeling the pipe wall with a frozen fluid volume and I have also tried to model just a soli cylinder and said the fluid to be air and assigned a wall to the outer of the volume but neither appear to work to tell me what the temperature is at the end of the pipe!
Any advice would be appreciated or if there is any examples you can upload that would also be great just so I can understand how to do this simple simulation!