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Convective cooling how to set inlet temperature the same as outer wall temperature
Posted 29 avr. 2015, 03:17 UTC−4 Heat Transfer & Phase Change Version 5.0 0 Replies
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In my model there is a copper tube with an inlet and an outlet. The fluid is air. I use 'Convective Cooling' to simulated the situation in an air incubator. The 'External Temperature' is '278.15+0.1*sin(2*pi*t/7200)', i.e. a full cycle lasts 2 hours.
I want to make the air inlet temperature the same as the temperature of one point on the copper outer surface. However, as the 'External Temperature' is not the outer surface temperature, when I set the inlet temperature '278.15+0.1*sin(2*pi*t/7200)' the results show that there is a 4.1 mK difference between the outer surface point and the inlet temperature during 7200 seconds. I also tried to let the inlet temperature be the same as a temperature probe at the outer surface point, but the results are weird, even bigger difference.
Could anybody help me? Thanks you very much indeed!
Sihe
Hello Sihe Wang
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