Gojko
Subscriber

Hello, 

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

Gregor


 


.