[petsc-users] snes options for rough solution

[Praveen C]

Dear all

I am solving a nonlinear parabolic problem with snes. The newton update is
rather non-smooth and I have convergence problems when using default
options.

Attached figure shows how solution changes in two time steps.

Are there any special algorithms/options in snes that I can use for such
problem ?

Thanks
praveen
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