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radiation

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MarWe

MarWe

September 2, 2010 6:35pm UTC

radiation

Hello,

I tried to model radiation in the Heat Transfer Module using the genral heat transfer application mode.
I was able to simulate radiation in vacuum.

But I failed when I tried to simulate radiation through the air.
The solver then break down with the following error message:

"Error:
Failed to find consistent initial values.
Singular_matrix

There are 16 void equations (empty rows in matrix) for the variable J
at coordinates: (-0.01,0.033), (-0.005,0.033), (-0.01,0.038), (0,0.033), (0.005,0.033), ...
and similarly for the degrees of freedom (empty columns in matrix)

Last time step is not converged."

What could be my mistake?

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0 votes
Ivar Kjelberg

Ivar Kjelberg
Moderator

September 3, 2010 3:56am UTC in response to MarWe

Re: radiation

Hi

I suppose you have something missing in the definition of your boundary conditions, or could it be in the material section ?

--
Good luck
Ivar

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