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.
Convergence Problem of GMRES method
Posted 13.11.2017, 03:00 GMT-5 Acoustics & Vibrations, Mesh, Studies & Solvers Version 5.3 1 Reply
Please login with a confirmed email address before reporting spam
Hi every one I’m trying to solve an acoustic problem with Thermoviscous Acoustics .I’m using an iterative solver (the default suggested solver of COMSOL) with Domain Decomposition. The problem is that when I reduce the mesh size the GMRES solver doesn’t converge! Actually it converges to almost a constant number rather than my relative tolerance (which is 0.001). Could you please help me to handle this problem out?!Is this related to my solver settings or sth else! I attached my convergence plots of different meshes and my settings.
Many thanks in advance for your help Farzad
Attachments:
- Convergence Plot 1.png
- Convergence Plot 2.png
- Convergence Plot 3.png
- Convergence Plot 4.png
- Convergence Plot 4.txt
- Convergence Plot 5.png
- settings 1.png
- settings 2.png
- settings 3.png
- settings 4.png
- settings 5.png
- settings 6.png
- settings 7.png
- settings 8.png
- settings 9.png
- Boundary Conditions.png
- Convergence plot of a converged mesh.png
Hello Farzad Kheradjoo
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.
Please login with a confirmed email address before reporting spam
Hello,
Were you able to figure out your issue? I am having a similar problem.
Best wishes, Chelsea