From 1cfa6c446c10201c07aaa5a3123668bcd31c6402 Mon Sep 17 00:00:00 2001 From: Wolfgang Bangerth Date: Sat, 12 Feb 2011 13:59:24 +0000 Subject: [PATCH] Add another couple pictures. git-svn-id: https://svn.dealii.org/trunk@23345 0785d39b-7218-0410-832d-ea1e28bc413d --- deal.II/include/deal.II/grid/grid_generator.h | 33 ++++++++++++++++++- 1 file changed, 32 insertions(+), 1 deletion(-) diff --git a/deal.II/include/deal.II/grid/grid_generator.h b/deal.II/include/deal.II/grid/grid_generator.h index 513336cd4a..dbfcda4142 100644 --- a/deal.II/include/deal.II/grid/grid_generator.h +++ b/deal.II/include/deal.II/grid/grid_generator.h @@ -595,7 +595,38 @@ class GridGenerator * @image html hypershell3d-6.png * @image html hypershell3d-12.png * - * This function is declared to + * Neither of these meshes is + * particularly good since one ends up + * with poorly shaped cells at the inner + * edge upon refinement. For example, + * this is the middle plane of the mesh + * for the n_cells=6: + * + * @image html hyper_shell-6_cross_plane.png + * + * The mesh generated with + * n_cells=6 is better but + * still not good. As a consequence, you + * may also specify + * n_cells=96 as a third + * option. The mesh generated in this way + * is based on a once refined version of + * the one with n_cells=12, + * where all internal nodes are re-placed + * along a shell halfway between the + * inner and outer boundary of the + * domain. The following two images + * compare half of the hyper shell for + * n_cells=12 and + * n_cells=96 (note that the + * doubled radial lines on the cross + * section are artifacts of the + * visualization): + * + * @image html hyper_shell_12_cut.png + * @image html hyper_shell_96_cut.png + * + * @note This function is declared to * exist for triangulations of * all space dimensions, but * throws an error if called in -- 2.39.5