Note: This discussion is about an older version of the COMSOL Multiphysics® software. The information provided may be out of date.
Discussion Closed This discussion was created more than 6 months ago and has been closed. To start a new discussion with a link back to this one, click here.
Evolution of temperature along a fine tube
Posted Jul 3, 2015, 10:35 a.m. EDT Fluid & Heat, Heat Transfer & Phase Change, Computational Fluid Dynamics (CFD) Version 4.4 0 Replies
Please login with a confirmed email address before reporting spam
I would like to see the evolution of the temperature in a steel tube (about 1 mm diameter).
I used the physic "non-isothermal flow" laminar.
My boundary conditions are 7bars input and 1 bar output.
The outside temperature (and initial temperature) is 25 ° C (298.15 K).
Due to the pressure drop along the tube, there should be a temperature loss.
Because of friction, there could be an increase in temperature.
Using a stainless steel tube, maybe the temperature of the outside air also plays a role during the flow.
I tried various boundary conditions (thermal insulation on the wall, heat flux, and convective heat flux). But I have no change in temperature at all, giving the impression that the flow is perfectly isothermal.
What can you advise me so that?
I could use some advice as to how I could observe the actual temperature along the tube.
Thank you in advance for your help,
Best Regards
Cyrielle Morlet
Attachments:
Hello Cyrielle Morlet
Your Discussion has gone 30 days without a reply. If you still need help with COMSOL and have an on-subscription license, please visit our Support Center for help.
If you do not hold an on-subscription license, you may find an answer in another Discussion or in the Knowledge Base.