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.
Undefined value found for Joule Heating and Thermal Expansion
Posted 19 nov. 2010, 07:37 UTC−5 0 Replies
Please login with a confirmed email address before reporting spam
So I'm using Joule Heating and Thermal expansion and trying to solve it time dependent. I made a cylinder and specified ground on one side (which is also fixed) and a rectangle voltage pulse on the other side, however i get some errors that I don't really understand:
Undefined value found.
- Detail: Undefined value found in the stiffness matrix.
There are 5745 equations giving NaN/Inf in the matrix rows for the variable mod1.u
at coordinates: (-0.000108515,-6.20447e-005,0.002), (-8.83875e-005,-8.83892e-005,0.002), (-6.20426e-005,-0.000108516,0.002), (-8.18416e-005,-6.0695e-005,0.002), (-5.51684e-005,-5.93454e-005,0.002), ...
There are 5745 equations giving NaN/Inf in the matrix rows for the variable mod1.v
at coordinates: (-0.000108515,-6.20447e-005,0.002), (-8.83875e-005,-8.83892e-005,0.002), (-6.20426e-005,-0.000108516,0.002), (-8.18416e-005,-6.0695e-005,0.002), (-5.51684e-005,-5.93454e-005,0.002), ...
There are 5745 equations giving NaN/Inf in the matrix rows for the variable mod1.w
at coordinates: (-0.000108515,-6.20447e-005,0.002), (-8.83875e-005,-8.83892e-005,0.002), (-6.20426e-005,-0.000108516,0.002), (-8.18416e-005,-6.0695e-005,0.002), (-5.51684e-005,-5.93454e-005,0.002), ...
and similarly for the degrees of freedom, NaN/Inf in the matrix columns
Any suggestions on how to proceed?
Hello Micke Malmström
Your Discussion has gone 30 days without a reply. If you still need help with COMSOL and have an on-subscription license, please visit our Support Center for help.
If you do not hold an on-subscription license, you may find an answer in another Discussion or in the Knowledge Base.