Rochan, there is Algorithms::Newton that can be used to set up a Newton method and there are multiple tutorial examples that deal with nonlinear problems. Have a look at step-15, step-25, step-44 and in particular step-42.
Best, Daniel On Tue, Feb 4, 2020, 6:45 PM rru <u.roc...@gmail.com> wrote: > Dear dealii developers, > > I have a quick question on non-linear solvers in dealii. > As far as I could gather, the only option for a newton solver is the > wrapper SUNDIALS::KINSOL, and for DAE the wrapper SUNDIALS::IDA. Is that > correct ? > In that event, is it possible to set up inequality constraints. In the > documentation it is mentioned that the following "optional" functions can > be supplied but syntax or description for them is not provided : > > - get_lower_than_zero_constrained_entries() > - get_greater_than_zero_constrained_entries() > - get_lower_equal_than_zero_constrained_entries() > - get_greater_or_equal_than_zero_constrained_entries() > > Regards, > Rochan > > > -- > The deal.II project is located at http://www.dealii.org/ > For mailing list/forum options, see > https://groups.google.com/d/forum/dealii?hl=en > --- > You received this message because you are subscribed to the Google Groups > "deal.II User Group" group. > To unsubscribe from this group and stop receiving emails from it, send an > email to dealii+unsubscr...@googlegroups.com. > To view this discussion on the web visit > https://groups.google.com/d/msgid/dealii/8c34994d-1ef3-4930-83e6-dc25c3c873c9%40googlegroups.com > <https://groups.google.com/d/msgid/dealii/8c34994d-1ef3-4930-83e6-dc25c3c873c9%40googlegroups.com?utm_medium=email&utm_source=footer> > . > -- The deal.II project is located at http://www.dealii.org/ For mailing list/forum options, see https://groups.google.com/d/forum/dealii?hl=en --- You received this message because you are subscribed to the Google Groups "deal.II User Group" group. To unsubscribe from this group and stop receiving emails from it, send an email to dealii+unsubscr...@googlegroups.com. To view this discussion on the web visit https://groups.google.com/d/msgid/dealii/CAOYDWbK9g19obM4RtpxaQHVGNMiKPcvdz84cA3Yrq0xEbPmUCQ%40mail.gmail.com.
