Note: This discussion is about an older version of the COMSOL Multiphysics® software. The information provided may be out of date.
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.
handling thin geometries and convergence problem
Posted Nov 17, 2014, 3:20 p.m. EST Low-Frequency Electromagnetics, Heat Transfer & Phase Change, Geometry, Studies & Solvers Version 4.4 0 Replies
Please login with a confirmed email address before reporting spam
I am trying to simulate Joule Heating analysis for a very thin geometry (description- 3 domains over each other with different materials respecectively,each have certain thickness) Please check the the attached file!
In Joule heating module, I am assigning HEat flux to respective boundaries of interest. (Basically a heat transfer problem) The physics and mesh is all set.
However when it starts computing it shows the following error at a certain time step.
"Nonlinear solver did not converge.
In segregated group 1:
Time : 0.8
Size of vector and sparse matrix disagree.
Last time step is not converged."
May I know how can I resolve this issue?
Many thanks!!
Attachments:
Hello Karan Bikkannavar
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.