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Temperatures on sides of the interface don't match

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Old   February 15, 2011, 14:31
Smile Temperatures on sides of the interface don't match
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Hi CFX users,

I'm doing a complex heat transfer simulation. On the picture attached you can see a Solid-Fluid Interface Side 1 and 2, and the temperatures don't match. The left one seems to be correct, but the right one is probably wrong. I've attached the interface settings. The areas of the interfaces equals. What can cause this problem, or is it a post error?

Thanks in advance,
Attila

nevleges_V2_004.jpg

interface.JPG

Last edited by Attesz; February 15, 2011 at 14:35. Reason: attachments
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Old   February 15, 2011, 15:05
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There not supposed to match. One is showing the fluid temperature and the other the solid temperature.
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Old   February 16, 2011, 05:56
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But they should match, because we talk about the same physical surface, or am I wrong? Is it a numerical thing?

On the other hand, the mesh sizes don't match on the sides. The solid interface has 3 times larger elements in the tangential direction than the fluid, however the axial directions match.

In the Post, the Temperature plotting is enough, or is there any trick to postprocess the results?

Thanks

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Old   February 16, 2011, 10:59
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The temperature of the physical surface would be the solid side temperature. In general the fluid flowing over that surface would not be at the same temperature as the solid surface.
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Old   February 16, 2011, 11:40
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Ok, thank you, I tought about it and it is really unambiguous.
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