I’ve been trying to simulate this case since the last week but unfortunately I haven’t succeed - link to my project.
The problem is that the case is just not converging. I thought the problem is in the mesh (it’s usually the mesh to blame). I did’t get the same mesh as in your tutorial from the beginning though I did meshing exactly as you described, but the difference was small (a couple of hundreds of elements) and I thought it would be OK - but no luck. Then I’ve tried to create a couple of more refined meshes, but the result is the same - it just not converges.
I’ve tried the several Numerics settings as well - more linear based configuration and the second order numerics schemes after that with non-orthogonal corrections - it didn’t work ether.
And after short search though the public projects I see the same problem appears for other users as well.
So can you please compare your smoothly working case and mine and maybe point out what I did wrong? I spent quite some time on this and really want to understand the problem.
PS I haven’t created topological sets as in your tutorial and haven’t created sip-wall BC, to save sometime. Those are main differences from your tutorial and I believe they are not the root of the problem.
Thank you in advance.