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radiaton problem

Posted 18 janv. 2012, 11:21 UTC−5 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 19 janv. 2012, 13:17 UTC−5
Nagi Elabbasi Facebook Reality Labs
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Posted: 1 decade ago 19 janv. 2012, 00:07 UTC−5
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 19 janv. 2012, 13:17 UTC−5
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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