Refine a solution (continue / iterate)

Iterate on one step

The command Iterate on one step enable:

• to “reprocess” one step incorrectly solved (because of non-convergence of the process)

• to “reprocess” one step correctly solved but its result appears incorrect

  (first, it is necessary to improve the precision of the used iterative linear solver)

From the operation point of view, the command Iterate on one step enable to resume the iterative process, as presented in the table below.

Analysis without parameters
Application	Scenario		Continue
Non-transient	Mono-step (a single step)		= Iterate on the step
Transient	Transient multi-step (many steps "connected to each other")		= Iterate on the last step

Analysis with parameters
Application	Scenario		Continue
Non-transient	Parametric multi-step (many independent steps)		= Iterate on the steps which has not converged
Transient	Transient and parametric multi-step (many steps "connected to each other" or independent)		= Iterate on the last step which has not converged for one or several transient solving processes