From f88246c9e9a933434cfeae6e87271628cfb51ed7 Mon Sep 17 00:00:00 2001 From: Timo Heister Date: Mon, 11 May 2020 14:35:12 -0400 Subject: [PATCH] step-50: Possible extensions --- examples/step-50/doc/results.dox | 11 ++++++++++- 1 file changed, 10 insertions(+), 1 deletion(-) 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). -- 2.39.5