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 criteria of the nonlinear solver are met but not all linear solver conditions are fulfilled.

Please login with a confirmed email address before reporting spam

Hello, I'm runing the free and porous media flow modeling. My target flow rate is 3m/s while it will not converge if I set the target flow rate directly so I run the model step by step (grdually increase the flow rate and use the previous result as the initial value for the next flow rate). Since I have a relative good initial guess, I set the damping constant of the solver as a constant 0.6. However, when I run the model each time I get an error as "Convergence criteria of the nonlinear solver are met but not all linear solver conditions are fulfilled." Does any one meet the same problem? Any suggestion for solving this problem? The snapping picture for the log file and convergence plot of the linear solver is attached. Thanks,! Peng



0 Replies Last Post Apr 29, 2019, 4:44 p.m. EDT
COMSOL Moderator

Hello Peng Wang

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.

Note that while COMSOL employees may participate in the discussion forum, COMSOL® software users who are on-subscription should submit their questions via the Support Center for a more comprehensive response from the Technical Support team.