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Convergence Problem of GMRES method
Posted 13 nov. 2017, 03:00 UTC−5 Acoustics & Vibrations, Mesh, Studies & Solvers Version 5.3 1 Reply
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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
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Hello,
Were you able to figure out your issue? I am having a similar problem.
Best wishes, Chelsea