physik moel used by Abaqus for cavity-radiation:

[rwthler]

Hello,
since I am able to implement cavity radiation I have some questions concerning the physical model used by Abaqus to solve cavities:

In the Therory manual I read that Abaqus only uses one Factor (Epsilon for emissivity) to simulate the material behavior. You can make it time dependent, but the assumption seems still to be: absorption-coefficient=emissivity-coefficient. This is the case for one wave-length due to "Wiens displacement law", but what if cavities have really different temperatures and therefore emitted energy has different wavelength. Then alpha for the receiving energy is not epsilon for the emitted energy.

Has somebody an explanation/solution?
Or am I wrong?

Thanks again for your help and interest

 

[rwthler]

oh, the caption has a spelling mistake

 

[rwthler]

nobody has got any idea? Also tips where to find further information would be very helpful.

Thanks a lot