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Radiation model fvDoM get huge radiative heat flux

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Old   April 23, 2018, 10:28
Default Radiation model fvDoM get huge radiative heat flux
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I am doing conjugate heat transfer using chtMultiRegionSimpleFOAM. If I switch off radiation model, everything is ok. But I need to result with radiation model since the temperature difference is a bit large 300 ~ 1500K.

Now, the problem is there is always a small area that radiation model get huge positive or negative radiative heat flux (+/-1E+14) level, then I will got a very large temperature or very small negative temperature, which then crash simulation. The problem is there are some bad cells, but I cannot get better mesh since geometry is very complex.

I want to ask if there is a way to bound fvDoM radiation model or other tricks to apply to improve stability of the fvDoM radiation model?

Thanks a lot.
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