]> https://gitweb.dealii.org/ - dealii.git/commitdiff
Add another couple pictures.
authorWolfgang Bangerth <bangerth@math.tamu.edu>
Sat, 12 Feb 2011 13:59:24 +0000 (13:59 +0000)
committerWolfgang Bangerth <bangerth@math.tamu.edu>
Sat, 12 Feb 2011 13:59:24 +0000 (13:59 +0000)
git-svn-id: https://svn.dealii.org/trunk@23345 0785d39b-7218-0410-832d-ea1e28bc413d

deal.II/include/deal.II/grid/grid_generator.h

index 513336cd4aa1fe156d5af256c41adc347c265fe2..dbfcda41424c63dea521742dcbb9c68cf06e3726 100644 (file)
@@ -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 <code>n_cells=6</code>:
+                                     *
+                                     * @image html hyper_shell-6_cross_plane.png
+                                     *
+                                     * The mesh generated with
+                                     * <code>n_cells=6</code> is better but
+                                     * still not good. As a consequence, you
+                                     * may also specify
+                                     * <code>n_cells=96</code> as a third
+                                     * option. The mesh generated in this way
+                                     * is based on a once refined version of
+                                     * the one with <code>n_cells=12</code>,
+                                     * 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
+                                     * <code>n_cells=12</code> and
+                                     * <code>n_cells=96</code> (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

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