From 78012aaf84d10547de4be43f96458c114d2cc650 Mon Sep 17 00:00:00 2001 From: bangerth Date: Wed, 21 Sep 2011 19:52:05 +0000 Subject: [PATCH] Further correction. git-svn-id: https://svn.dealii.org/trunk@24357 0785d39b-7218-0410-832d-ea1e28bc413d --- deal.II/examples/step-31/doc/intro.dox | 2 +- 1 file changed, 1 insertion(+), 1 deletion(-) diff --git a/deal.II/examples/step-31/doc/intro.dox b/deal.II/examples/step-31/doc/intro.dox index b6cec9d0d8..715628b799 100644 --- a/deal.II/examples/step-31/doc/intro.dox +++ b/deal.II/examples/step-31/doc/intro.dox @@ -771,7 +771,7 @@ because it neglects the coupling of components at the boundary. A better way to do things is therefore if we build the matrix $\hat A$ as the vector Laplace matrix $\hat A_{ij} = (\nabla {\mathbf v}_i, \eta \nabla {\mathbf v}_j)$ and then apply the same boundary condition -as we applied to A. If this is a Dirichlet boundary conditions all +as we applied to A. If this is a Dirichlet boundary condition all around the domain, the $\hat A$ will decouple to three diagonal blocks as above, and if the boundary conditions are of the form $\mathbf u \cdot \mathbf n = 0$ then this will introduce a coupling of degrees of -- 2.39.5