Dear Jean-Paul, Thank you very much for your quick reply! I will read it now!
Best, Chucui 在 2019年2月21日星期四 UTC+8下午5:17:17，Jean-Paul Pelteret写道： > > Hi Chucui, > > I can only offer you a very brief reply right now: You might want to look > into the ConvergenceTable > <https://www.dealii.org/9.0.0/doxygen/deal.II/classConvergenceTable.html> > class > to help you with (1). The introduction to the class directs you to some > tutorials that indicate its use. > > Best, > Jean-Paul > > On 21 Feb 2019, at 10:11, chucu...@gmail.com <javascript:> wrote: > > Hi all, > > I have 2 questions of computing convergence rate of L2 norm of error: > > 1. If I don't have exact solution, does deal.ii have functions to compute > convergence rate directly? (Like VectorTools::integrate_difference, which > deals with the problem with exact solution ) > > 2. If I want to compute convergence rate of error of solutions with > different globally refinement (u_{h}-u_{h/2}, u_{h/2}-u_{h/4}, and so on ), > does deal.ii have functions to compute convergence rate directly? > if not, how to deal with computing u_{h}-u_{h/2}, where the 2 numerical > solution have different size of vector? > > Thanks in advance! > > Best, > Chucui > > -- > 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+un...@googlegroups.com <javascript:>. > For more options, visit https://groups.google.com/d/optout. > > > -- 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. For more options, visit https://groups.google.com/d/optout.
