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-   -   Convergence Problem with body force driven flow (http://www.cfd-online.com/Forums/fluent/70829-convergence-problem-body-force-driven-flow.html)

Jinfeng December 7, 2009 13:15

Convergence Problem with body force driven flow
 
Hi folks,

I am running a simulation of air flowing through an open-ended channel under the atmosphere condition. The air movement is driven purely by the electrical body force. There is no initial flow at the inlet. It's a laminar steady flow. I tried SIMPLE and SIMPLEC for the pressure-velocity coupling. For pressure discretization, I tried several including Body Force Weighted. I also reduced URF every now and then during the calculation, but none of these trials suceeded in making the calculation converge. Upto a certain point, the calculation will go towards divergence. What should I do with it? Any suggestions would be appreciated!

Regards,
Jinfeng

Goldsstean December 9, 2009 04:54

If it is not Multiphase flow, then try to intialize you solution with FMG (full multi grid solver). Definitly it will work.


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