From: Timo Heister Date: Mon, 11 May 2020 18:35:12 +0000 (-0400) Subject: step-50: Possible extensions X-Git-Tag: v9.2.0-rc1~22^2 X-Git-Url: https://gitweb.dealii.org/cgi-bin/gitweb.cgi?a=commitdiff_plain;h=f88246c9e9a933434cfeae6e87271628cfb51ed7;p=dealii.git step-50: Possible extensions --- diff --git a/examples/step-50/doc/results.dox b/examples/step-50/doc/results.dox index 2f0a22d88f..750b8e87d1 100644 --- a/examples/step-50/doc/results.dox +++ b/examples/step-50/doc/results.dox @@ -209,7 +209,16 @@ only an eighth of the number of unknowns.

Possible extensions

-We currently don't have suggestions for possible extensions. +

Testing convergence and higher order elements

+The finite element degree is currently hard-coded as 2, see the template +arguments of the main class. It is easy to change. To test, it would be +interesting to switch to a test problem with a reference solution. This way, +you can compare error rates. +

Coarse solver

+A more interesting example would involve a complicated coarse mesh (see +step-49 for inspiration). This then requires a more sophisticated coarse +solver for the geometric multigrid methods. A common approach here is a switch +to AMG by assembling the coarse matrix (even for the matrix-free version).