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temperature boundary condition with heat transfer coefficient

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Old   December 9, 2010, 12:14
Default temperature boundary condition with heat transfer coefficient
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Sebastian Lang
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Hi there!

I am sorry for asking such a stupid question, but I invested a lot of time in searching but didn't find the answer:

How can I give the temperature field of a solid region in the chtMultiRegionFoam-Solver the trivial boundary condition

q = alpha * ( T - T_inf )

???

I am absolutely sure that this is possible, because this is absolutely one of the most basic boundary conditions when dealing with heat transfer problems!

There is a boundary condition "wallHeatTransfer" that seems to do what I want, but it belongs to the thermophysicalProperties-library. I am confused about that, because I thought this library is only used for the fluid regions?!?!

If this BC is the way to do that, then what should I write into the thermophysicalProperties-Dictionary? I think treating a solid as an incompressible fluid is a bit strange, isn't it?

Thanks for any replies!
Greetings Sebastian
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Old   December 9, 2010, 12:18
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Ben K
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As far as I can tell, the easiest way to do this is to install groovyBC, otherwise you'd have to make your own BC.

Check out this thread: Mixed BC - heat transfer - laplacianFoam
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Old   December 9, 2010, 17:04
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Sebastian Lang
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Thanks a lot benk!

This solution in fact is a bit more complicated than I expected for such a "standard" boundary condition, but I am happy as long as my simulation runs ;-)

I already spent so much time in learning the usage of this chtMultiRegionFoam-Solver, because I currently absolve my internship in a company and have to test OpenFOAM for them. They want me to check out, if the program is usable for a real industrial case like the simulation of heat transfer through a whole pump, but I really think that the lack of documentation will keep OpenFOAM from getting important in real industrial applications!

But well, as I said above, thanks a lot for your help!
Greetings Sebastian
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