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-   -   continuity convergence (http://www.cfd-online.com/Forums/fluent/104991-continuity-convergence.html)

hamid1 July 20, 2012 04:30

continuity convergence
 
Hi,
do you know
how to fix convergence in continuity in modeling with vof (implicit)?

shk12345 July 20, 2012 05:24

Decrease the time step and try it.
Change grid.

shk

hamid1 July 20, 2012 05:37

thanks for reply, i decreased the time step .. it still oscillates .. Unfortunatly i can not increase the mesh .. or cahnge..
what about URF,
does changing URF, (radically decreasing it) leads to wrong results (even if reaching to convergence and low residuals) ?

flotus1 July 20, 2012 05:52

If "convergence" is achieved, it doesn't matter with which under-relaxation factor your simulation got there.

It will only take longer with low URF.


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