According to the knowledge base:
You will get an Solver Abnormally Terminated error message when the solver fails to find a
solution to the problem.
There are three typical causes for the solver to fail at that point:
● Material properties
● Boundary conditions
In addition to the above, you should take into account:
● Any warning message displayed in the Info dialog box of the Flow Simulation Solver window.
● The results found just before the solver termination.
Are there any warning messages displayed in the solver menu? And do you see something in the results?
There is an article dedicated to this error message and i have attached it to this message.
FAQID__x194.pdf 85.0 KB
It seems that I have fixed my problem. I was a bit lazy when I cleaned the geometry, so there were some small holes and gaps left. In the beginning this was no problem, but I think during the refinement some cells were modified. (Maybe some cells in a small gap with no flow were coarsened too much?) At some point of the refinement, the simulation crashed. There were no warnings and the results before the solver termination were ok.
The solution was to clean the geometry very carefully and close all unnecessary small gaps, especially gaps that lead to “dead volumes” behind some parts. After that, everything works fine.
Thanks for your help