I'm not sure I have anything posted publicly. I will put together a minimal example.
> On May 11, 2016, at 12:42 PM, Daniel Wheeler <[email protected]> > wrote: > > Hi Kris, > > FiPy doesn't have an automated way to do Newton iterations. You can > always construct your own Newton iteration scheme using the terms and > equations as you would ordinarily, but then you have to do the > variational derivatives and the coupling by hand. This also assumes > that you are familiar with the Newton method. You can query an > equation for its residual which then needs to be added to the Newton > version of the equation. I think that means that each equation > requires two implementations, the regular and the Newton. > > Regarding examples of using FiPy with Newton iterations, I don't > believe that we have any examples in the source code although I do > know that some people have used it in this way including Jon Guyer. He > may have examples in Github somewhere that would help you get started, > but I'll let him point you to them. > > Cheers, > > Daniel > > On Tue, May 10, 2016 at 9:31 AM, Kris Kuhlman > <[email protected]> wrote: >> I am interested in trying to use newton iterations, rather than simply >> fixed-point iterations, to speed up the convergence of the non-linear >> iterations in my fipy problem. >> >> I have found this mention of a term useful for newton iterations, >> >> http://www.ctcms.nist.gov/fipy/fipy/generated/fipy.terms.html#module-fipy.terms.residualTerm >> >> and I see this mention of an example using newton iterations >> >> https://github.com/usnistgov/fipy/wiki/ScharfetterGummel >> >> but I don't see the actual code it is talking about. Is there an example >> available somewhere? >> >> Kris >> >> _______________________________________________ >> fipy mailing list >> [email protected] >> http://www.ctcms.nist.gov/fipy >> [ NIST internal ONLY: https://email.nist.gov/mailman/listinfo/fipy ] >> > > > > -- > Daniel Wheeler > _______________________________________________ > fipy mailing list > [email protected] > http://www.ctcms.nist.gov/fipy > [ NIST internal ONLY: https://email.nist.gov/mailman/listinfo/fipy ] _______________________________________________ fipy mailing list [email protected] http://www.ctcms.nist.gov/fipy [ NIST internal ONLY: https://email.nist.gov/mailman/listinfo/fipy ]
