OGS
[tag] starting_iteration

The iteration number from which Tikhonov regularisation starts to be applied. The default value is 0, meaning the regularisation is applied from the first iteration.

Should be chosen such that the regularisation does not interfere with the initial convergence phase. Often set to a value where the solver shows poor convergence (e.g., 10-15 iterations).

Example:**

<starting_iteration>11</starting_iteration>

Additional info

From NumLib/ODESolver/CreateNonlinearSolver.cpp line 124

  • This is an optional parameter.
  • This parameter has a default value of 0.
  • Data type: int
  • Expanded tag path: nonlinear_solvers.nonlinear_solver.tikhonov.starting_iteration
  • Go to source code: → ogs/ogs/6.5.9

Used in the following test data files