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Radiation and convection heat transfer in a room through heat pipe

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Old   February 26, 2018, 05:08
Exclamation Radiation and convection heat transfer in a room through heat pipe
Mankaran Dhiman
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Hello everyone

I am trying to simulate radiation and natural convection in a room due to hot air flowing through a pipe across that room. But in the temperature contour at a cross section of a room i am getting temperatures close to the room wall and pipe wall but empty space everywhere else. It does not show any value of temperature at that space as shown in the attached photo.
In geometry, I created two solids, first a cuboid room and second a cylindrical hot air domain with inlet at one wall of the room and outlet at the opposite. I performed the boolean subtract operation for two solids and then combined them to form one part. Then in the mesh, created named selection for inlet, outlet, pipe wall and room air fluid domain and pipe air fluid domain. Completed the rest of the setup and solved but with the problem stated above.
Does it have to do with any interface at the pipe wall? I also enabled S2S radiation. Please help, its important. If you want any more information i'll provide it.

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File Type: jpg heatpipe_temperature_screenshot.jpg (25.3 KB, 11 views)
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convection, fluent, heat pipe, heat transfer, radiation

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