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Attesz February 15, 2011 14:31

Temperatures on sides of the interface don't match
2 Attachment(s)
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,

Attachment 6499

Attachment 6500

stumpy February 15, 2011 15:05

There not supposed to match. One is showing the fluid temperature and the other the solid temperature.

Attesz February 16, 2011 05:56

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?


stumpy February 16, 2011 10:59

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.

Attesz February 16, 2011 11:40

Ok, thank you, I tought about it and it is really unambiguous.

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