From: bangerth Date: Thu, 29 Sep 2011 21:06:01 +0000 (+0000) Subject: Augment statement by class name. X-Git-Url: https://gitweb.dealii.org/cgi-bin/gitweb.cgi?a=commitdiff_plain;h=6554cb4f40b865bf7e7633e673fcfe7d30560cf9;p=dealii-svn.git Augment statement by class name. git-svn-id: https://svn.dealii.org/trunk@24477 0785d39b-7218-0410-832d-ea1e28bc413d --- diff --git a/deal.II/examples/step-32/doc/intro.dox b/deal.II/examples/step-32/doc/intro.dox index f7c188b5ab..d2d786350e 100644 --- a/deal.II/examples/step-32/doc/intro.dox +++ b/deal.II/examples/step-32/doc/intro.dox @@ -568,6 +568,24 @@ prefer. Consequently, we leave that up to the user and make it a parameter in the input file which one to use. +

Higher order mappings for curved boundaries

+ +In the program, we will use a spherical shell as domain. This means +that the inner and outer boundary of the domain are no longer +"straight" (by which we usually mean that they are bilinear surfaces +that can be represented by the StraightBoundary class). Rather, they +are curved and it seems prudent to use a curved approximation in the +program if we are already using higher order finite elements for the +velocity. Consequently, we will introduce a member variable of type +MappingQ that +denotes such a mapping (step-10 and step-11 introduce such mappings +for the first time) and that we will use in all computations on cells +that are adjacent to the boundary. Since this only affects a +relatively small fraction of cells, the additional effort is not very +large and we will take the luxury of using a quartic mapping for these +cells. + +

Parallelization on clusters

Running convection codes in 3d with significant Raleigh numbers requires a lot