Discussion Closed This discussion was created more than 6 months ago and has been closed. To start a new discussion with a link back to this one, click here.
radiation
Posted 2 sept. 2010, 14:35 UTC−4 1 Reply
Please login with a confirmed email address before reporting spam
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 2 sept. 2010, 23:56 UTC−4
Please login with a confirmed email address before reporting spam
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