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Convergence Problem when using the Periodic Flow Condition

Posted Apr 20, 2014, 3:57 a.m. EDT Fluid & Heat, Microfluidics, Studies & Solvers Version 4.4 0 Replies

Huifeng Du
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Hi everyone,

I'm currently using the Laminar Two Phase Flow- Phase Field(tpf) model in Comsol 4.4. The geometry setup is attached.

The problem is when I applied Periodic Flow Condition to the left and right side, the time-dependent solver cannot converge. The error message is something like "Fail to get consistent initial values. The last time step is not converged". When I replaced the Periodic Condition with Inlet and Outlet, the error disappeared. So I just assume that there was something wrong with the periodic flow condition.

Thank you all for your attention and your help is much appreciated.

Best regards,
Huifeng

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0 Replies Last Post Apr 20, 2014, 3:57 a.m. EDT
COMSOL Moderator

Hello Huifeng Du

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