[petsc-users] 2D ploar domain

[Amir]

Hello
I have a 2D polar computational domain, which equation specified on a tensor-product mesh.As I increase the number of nodes at the near center, I encounter that the LineSearch which I use generallly as bt, does not go well. In fact, I would not be able to converge. Do you have any idea on this?
Thanks
Amir

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