Hello Timo,
Does it also occur when your grid is fine from the beginning and you
don't have hanging nodes?
Yes, I tried different variants, strctured, adapted, unstructured and
the behaviour is the same.
What are your criterions for Newton convergence?
At the beginning, I just copied from some examples. Now I tried to make
them more stringent but it is not resolutive.
From a modeling point of view, it's also unclear to me why you need
this wavy initial condition?
Yes, it is like you say, just for triggering fingers. Unfortunately, at
this point of the project is not plausible to change it.
One, "curious" aspect is that when comparing with comsol, for example,
the BC is cleanly verified at all times even if in general all solution
are affected by much more numerical noise.
Could you think of anything to try to investigate such behaviour?
Thank you,
Lorenzo
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