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Evolution of temperature along a fine tube
Posted 2015年7月3日 GMT-4 10:35 Fluid & Heat, Heat Transfer & Phase Change, Computational Fluid Dynamics (CFD) Version 4.4 0 Replies
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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
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Hello Cyrielle Morlet
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