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 The information provided may be out of date.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.
Removing Symmetric Boundary Condition leads to non-converging model
Posted 2012/07/04 12:47 GMT-4 Fluid & Heat Version 4.3 0 Replies
Please login with a confirmed email address before reporting spam
I am modeling a rib with a small inlet gap in the middle. For my
first simulation I used symmetric boundary conditions on both sides of the body.
The simulation converged for every mesh.
If I remove the symmetric BC on one side and declare it as an additional outlet, I have big problems with the convergence of the system. For a very coarse mesh it somehow still converges, for finer meshes however it does not.
How can I improve the convergence of the model? I don't think that I am missing boundary conditions.
I've also tried to split the domain into 3 parts using initial values. Convergence does not improve.
Any hints? I've attached a file of my model.
Attachments:
Hello Rennan Hu
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.