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radiaton problem

Posted Jan 18, 2012, 11:21 a.m. EST Heat Transfer & Phase Change Version 4.2a 2 Replies

Toru Okada
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I have a problem simulating a geometry where the heat transfer mechanisms are both convection and radiation.
When I am simulating the problem using only convection, it runns really fast and the results are good. When I add the radiation mechanism, it cannot reach a convergence and it runs forever. I am using the "Surface-to-Ambient Radiation" module.

Any suggestions?

Thanks!
2 Replies Last Post Jan 19, 2012, 1:17 p.m. EST
Nagi Elabbasi Facebook Reality Labs
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Posted: 1 decade ago Jan 19, 2012, 12:07 a.m. EST
Radiation heat transfer is proportional to T^4 so it’s more nonlinear than convection. Still it should work. Check the ambient temperature and the emissivity.

Nagi Elabbasi
Veryst Engineering
Radiation heat transfer is proportional to T^4 so it’s more nonlinear than convection. Still it should work. Check the ambient temperature and the emissivity. Nagi Elabbasi Veryst Engineering
Toru Okada
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Posted: 1 decade ago Jan 19, 2012, 1:17 p.m. EST
Thanks for the answer!
I think i have to try interfering in the solver because of the non-lineariaty of the problem.
Thanks for the answer! I think i have to try interfering in the solver because of the non-lineariaty of the problem.

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