Hi Miguel, On Tue, Sep 6, 2016 at 6:46 PM, Salazar De Troya, Miguel < salazardet...@llnl.gov> wrote: > > > I started learning about the dual weighted residual error estimator. From > what I read here: http://cadmus.usc.edu/UQ-SummerSchool-2013/bauman.pdf
Well there's a blast from the past. > there are two approaches in libMesh: One, calculate the adjoint solution > in an enriched space; two, use a classic error estimator for both the > primal and the adjoint solutions. I have two questions with regards to this > approach: > > * What is the error incurred by choosing the second option? > I'll echo what Vikram suggested (and what's in the slides you linked): this is a good error indicator for refinement, but once you've refined some number of iterations, then switch to the other for getting an actual error estimate. This is a very rich subject and we only have some of the basics in libMesh, but there's definitely lots of options for error indicators for driving refinement; see the references in the slides. If you're interested in making contributions, we'd be happy to help guide you. Best, Paul ------------------------------------------------------------------------------ _______________________________________________ Libmesh-users mailing list Libmesh-users@lists.sourceforge.net https://lists.sourceforge.net/lists/listinfo/libmesh-users
