Fluid Solid Interface Temperature

sasanghomi · October 13, 2019, 07:01

Dear friends,

Would it be a problem if I had different temperature on the solid side and the fluid side of an interface?
As per the CFX User Guide, it is probable to have a discrepancy between the above-mentioned temperature. How large could it be?

Any idea would be appreciated.

BR,
Sasan

ghorrocks · October 13, 2019, 18:13

The control volumes will be at different temperatures on either side of the interface, that is how the heat transfer at the interface is implemented.

Or have I misunderstood you? If so, which temperatures are you talking about?

sasanghomi · October 14, 2019, 00:32

I mean the interface between the solid domain and the fluid domain has two sides, one of which belongs to the solid domain and the other one belongs to the fluid one. However, they are situated in one place and GGI interface connects these two sides together.
Is there any problem when the "areaAve(T)" reports different temperature for these two sides?

Sasan Ghomi
BR

October 13, 2019, 07:01	Fluid Solid Interface Temperature	#1
sasanghomi Senior Member Sasan Ghomi Join Date: Sep 2012 Location: Denmark Posts: 292 Rep Power: 14	Dear friends, Would it be a problem if I had different temperature on the solid side and the fluid side of an interface? As per the CFX User Guide, it is probable to have a discrepancy between the above-mentioned temperature. How large could it be? Any idea would be appreciated. BR, Sasan

October 13, 2019, 18:13		#2
ghorrocks Super Moderator Glenn Horrocks Join Date: Mar 2009 Location: Sydney, Australia Posts: 17,703 Rep Power: 143	The control volumes will be at different temperatures on either side of the interface, that is how the heat transfer at the interface is implemented. Or have I misunderstood you? If so, which temperatures are you talking about? __________________ Note: I do not answer CFD questions by PM. CFD questions should be posted on the forum.

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October 14, 2019, 00:32		#3
sasanghomi Senior Member Sasan Ghomi Join Date: Sep 2012 Location: Denmark Posts: 292 Rep Power: 14	I mean the interface between the solid domain and the fluid domain has two sides, one of which belongs to the solid domain and the other one belongs to the fluid one. However, they are situated in one place and GGI interface connects these two sides together. Is there any problem when the "areaAve(T)" reports different temperature for these two sides? Sasan Ghomi BR