Conjugate Heat Transfer B.C.

SuperSonicCat · December 24, 2020, 14:59

Hello forum,

i am currently trying to do a coupled cf-thermal- simulation:

I have a pipe with a hot water flowing inside. The pipe-wall is 2 mm thick and i am interested in the steady- state temperature-field in that wall. Which boundary condition should i apply on the outer wall of the pipe?
Lets say the pipe-wall is made of aluminium and the outer medium is air at some temperature.
How do engineers solve that kind of problems?

Best regards.

sbaffini · December 25, 2020, 11:17

Probably a convective boundary condition using an h from the closest possible case (buoyancy should certainly be accounted for).

SuperSonicCat · December 25, 2020, 13:03

Thank you!

I will try it out.

December 24, 2020, 14:59	Conjugate Heat Transfer B.C.	#1
SuperSonicCat New Member Join Date: Oct 2020 Posts: 15 Rep Power: 6	Hello forum, i am currently trying to do a coupled cf-thermal- simulation: I have a pipe with a hot water flowing inside. The pipe-wall is 2 mm thick and i am interested in the steady- state temperature-field in that wall. Which boundary condition should i apply on the outer wall of the pipe? Lets say the pipe-wall is made of aluminium and the outer medium is air at some temperature. How do engineers solve that kind of problems? Best regards.

December 25, 2020, 11:17		#2
sbaffini Senior Member Paolo Lampitella Join Date: Mar 2009 Location: Italy Posts: 2,195 Blog Entries: 29 Rep Power: 39	Probably a convective boundary condition using an h from the closest possible case (buoyancy should certainly be accounted for). SuperSonicCat likes this.

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December 25, 2020, 13:03		#3
SuperSonicCat New Member Join Date: Oct 2020 Posts: 15 Rep Power: 6	Thank you! I will try it out.