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

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