]> https://gitweb.dealii.org/ - dealii.git/commitdiff
Add changelog.
authorMartin Kronbichler <kronbichler@lnm.mw.tum.de>
Mon, 4 Dec 2017 14:56:33 +0000 (15:56 +0100)
committerMartin Kronbichler <kronbichler@lnm.mw.tum.de>
Tue, 12 Dec 2017 08:58:05 +0000 (09:58 +0100)
doc/news/changes/major/20171204MartinKronbichler [new file with mode: 0644]

diff --git a/doc/news/changes/major/20171204MartinKronbichler b/doc/news/changes/major/20171204MartinKronbichler
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+Improved: The mesh smoothing algorithms applied in the Triangulation class and
+MappingQGeneric have been changed from the old Laplace-style smoothing to a
+transfinite interpolation that linearly blends between the descriptions on the
+faces around a cell. The old transformation introduced boundary layers inside
+cells that prevented convergence rates to exceed 3.5 in the global L2 errors
+on typical settings, whereas all derivatives in the mapping from unit to real
+cell are bounded by the derivatives of the manifold description. This change
+also considerably improves mesh quality on settings where curved descriptions
+were only applied to the boundary rather than the whole volume.
+<br>
+(Martin Kronbichler, 2017/12/04)

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