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Closed
Created by Lukas Riedel@lriedelOwner

improve Newton solver parameters

There were a couple of issues observed with the Newton solver:

  1. AbsoluteLimit lower than 1e-8 is not observable in the (single precision) VTK output.
  2. If AbsoluteLimit is too high, the solver will not perform an iteration for small time steps and weak dynamics.
  3. We don't use Reduction.

Propositions:

  • AbsoluteLimit = 1e-10
  • Reduction = 1e-4: To save time, allow a lower defect if the reduction is sufficient
  • ForceIteration = true: make sure that we don't skip dynamics
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