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radiation
Posted Sep 2, 2010, 2:35 p.m. EDT 1 Reply
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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?
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?
1 Reply Last Post Sep 2, 2010, 11:56 p.m. EDT
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Posted:
1 decade ago
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
I suppose you have something missing in the definition of your boundary conditions, or could it be in the material section ?
--
Good luck
Ivar