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Heat flux or open boundary

Posted 21 févr. 2014, 09:16 UTC−5 Heat Transfer & Phase Change Version 4.3b 0 Replies

Nikos Vas
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Hello all,

I am trying to modell a reactor and run a "Heat transfer in solids" analysis. The whole system is insulated except from the cap. So my question is which boundary condition should I select for the cap domain:

1)Heat Flux inserting the heat transfer coefficient between steel-air or
2)Open Boundary inserting just the exterior temp

Ι have runned both but in the second the loses are clearly bigger despite that this choice seems better to me but I'm not sure if I have understand it correctly as I 'm totally new to the use of the programm.

Thanks in advance
0 Replies Last Post 21 févr. 2014, 09:16 UTC−5
COMSOL Moderator

Hello Nikos Vas

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