[cig-commits] commit 2014 by bangerth to /var/svn/dealii/aspect

[dealii.demon at gmail.com]

Revision 2014

Describe previous change.

U   trunk/aspect/doc/modules/changes.h


http://www.dealii.org/websvn/revision.php?repname=Aspect+Repository&path=%2F&rev=2014&peg=2014

Diff:
Modified: trunk/aspect/doc/modules/changes.h
===================================================================
--- trunk/aspect/doc/modules/changes.h	2013-11-19 20:43:14 UTC (rev 2013)
+++ trunk/aspect/doc/modules/changes.h	2013-11-19 20:45:15 UTC (rev 2014)
@@ -8,6 +8,16 @@
 </p>
 
 <ol>
+  <li>Fixed: When using compressible models, we fixed up the right hand side
+  vector in a way so that the mean divergence is zero (even though it is of
+  course locally nonzero due to the compressibility). This is necessary to ensure
+  the solvability of the linear system, but it is wrong if the domain has open
+  boundaries through which fluid can escape or enter. We now only perform
+  this correction if there are no open boundaries and no boundaries with a
+  prescribed velocity.
+  <br>
+  (Timo Heister 2013/11/08)
+
   <li>New: It is now possible to prescribe the velocity only for certain
   components in the 'Prescribed velocity boundary indicators' parameter.
   <br>