Wrong index, added clean-up files to Makefile.

git-svn-id: https://svn.dealii.org/trunk@15998 0785d39b-7218-0410-832d-ea1e28bc413d

diff --git a/deal.II/examples/step-31/Makefile b/deal.II/examples/step-31/Makefile
index a3873d0ad2e88f86ade9389889d20ccda5278505..e6f980d2128384cd0005fcef3b7b779bbec63b2a 100644 (file)
--- a/deal.II/examples/step-31/Makefile
+++ b/deal.II/examples/step-31/Makefile
@@ -30,7 +30,7 @@ D = ../../
 # shall be deleted when calling `make clean'. Object and backup files,
 # executables and the like are removed anyway. Here, we give a list of
 # files in the various output formats that deal.II supports.
-clean-up-files = *gmv *gnuplot *gpl *eps *pov
+clean-up-files = *gmv *gnuplot *gpl *eps *pov *vtk
 
 
 

diff --git a/deal.II/examples/step-31/step-31.cc b/deal.II/examples/step-31/step-31.cc
index 033d8a4830bbf026b459d2a94ea81df7a16bad33..e4f3b1368c021e7d46cd6790fcd57e28c7b21284 100644 (file)
--- a/deal.II/examples/step-31/step-31.cc
+++ b/deal.II/examples/step-31/step-31.cc
@@ -664,7 +664,7 @@ void BoussinesqFlowProblem<dim>::assemble_system ()
       Mp_preconditioner
        = boost::shared_ptr<SparseILU<double> >
                (new SparseILU<double>);
-      Mp_preconditioner->initialize (system_matrix.block(0,0),
+      Mp_preconditioner->initialize (system_matrix.block(1,1),
                                     SparseILU<double>::AdditionalData());
 
       std::cout << std::endl;