[cig-commits] commit 1873 by bangerth to /var/svn/dealii/aspect

[dealii.demon at gmail.com]

Revision 1873

Add a section on lowering polynomial degrees.

U   trunk/aspect/doc/manual/manual.tex


http://www.dealii.org/websvn/revision.php?repname=Aspect+Repository&path=%2F&rev=1873&peg=1873

Diff:
Modified: trunk/aspect/doc/manual/manual.tex
===================================================================
--- trunk/aspect/doc/manual/manual.tex	2013-09-10 20:09:57 UTC (rev 1872)
+++ trunk/aspect/doc/manual/manual.tex	2013-09-10 20:11:20 UTC (rev 1873)
@@ -2149,8 +2149,31 @@
 
 
 \subsubsection{Using lower order of temperature/compositional discretization}
+The default settings of spect{} use quadratic finite elements for the
+velocity. Given that the temperature and compositional fields essentially (up
+to material parameters) satisfy advection equations of the kind $\partial_t T +
+\mathbf u