I am facing some strange problems now: 

Error: Divergence detected in AMG solver: pressure correction

Error Object: #f

I assume it is because of >infinitive< vortex that occurs in my flow.

Once again, I am uploading very simple geometry from which I am trying to learn.

Iterations are OK until 10 and than continuity goes up

R (Right): velocity-inlet: 10m/s

L (Left): pressure-outlet: Gauge: 0 Pa



Also I have tried:
-with similar geometry as original post and in that case it works, so I assume boundary conditions are not case of causing problems. 

-with extremely big enclosure it works fine until 20 iterations and at 90 stops with: Error: Divergence detected in AMG solver: x-momentum

Error Object: #f

x is flow direction

 -Doing finer mesh on the  a) edges b)faces which had improved results but still ran continuity to the sky

I found some ideas on using bulk conditions and am still trying to understand them, but do you maybe have any other ideas how to face this problem?

Kind regards