From 28fcde765404d5112c4f0afc74187e3252e80673 Mon Sep 17 00:00:00 2001 From: bangerth Date: Thu, 16 Dec 2010 21:42:39 +0000 Subject: [PATCH] Explain what we are seeing. git-svn-id: https://svn.dealii.org/trunk@22985 0785d39b-7218-0410-832d-ea1e28bc413d --- deal.II/examples/step-38/doc/results.dox | 12 ++++++++++-- 1 file changed, 10 insertions(+), 2 deletions(-) diff --git a/deal.II/examples/step-38/doc/results.dox b/deal.II/examples/step-38/doc/results.dox index 5e5bee9ba1..a3eda5aec0 100644 --- a/deal.II/examples/step-38/doc/results.dox +++ b/deal.II/examples/step-38/doc/results.dox @@ -20,8 +20,16 @@ H1 error = 0.00552639 @endverbatim This is what we expect: make the mesh size smaller by a factor of two and the -error goes down by a factor of four (***HM, SHOULDN'T IT BE A FACTOR OF -TWO???***) +error goes down by a factor of four (remember that we use bi-quadratic +elements). The full sequence of errors from one to five refinements looks like +this, neatly following the theoretically predicted pattern: +@verbatim +0.360759 +0.0888008 +0.0221245 +0.00552639 +0.0013813 +@endverbatim Finally, the program produces graphical output that we can visualize. Here is a plot of the results: -- 2.39.5