It seems that I have a problem with my mesh/geometry. The Simulation is running without problems until the mesh gets refined. After (or while, not sure about that) the refinement the simulation crashes with a “solver abnormally terminated” message. When I change the level of refinement from 3 to 2 it runs without problems.

Does this mean that I have some small gaps or other geometry issues? The geometry check was ok.

What else could be the reason for the crash?

Thanks!