From: kronbichler Date: Thu, 12 Sep 2013 07:11:06 +0000 (+0000) Subject: Some small fixes X-Git-Url: https://gitweb.dealii.org/cgi-bin/gitweb.cgi?a=commitdiff_plain;h=620b92acf3e6a49d33701266ad8b208bfbadd144;p=dealii-svn.git Some small fixes git-svn-id: https://svn.dealii.org/trunk@30676 0785d39b-7218-0410-832d-ea1e28bc413d --- diff --git a/deal.II/examples/step-51/doc/intro.dox b/deal.II/examples/step-51/doc/intro.dox index df55ef9b25..ab2f4850d9 100644 --- a/deal.II/examples/step-51/doc/intro.dox +++ b/deal.II/examples/step-51/doc/intro.dox @@ -179,11 +179,11 @@ Find $(\mathbf{q}_h, u_h, \lambda_h) \in (w, f)_{\mathcal{T}}, \quad \forall w \in \mathcal{W}_h^p, \\ - < \mu, \mathbf{c} \lambda_h\cdot \mathbf{n} + \left< \mu, \mathbf{c} \lambda_h\cdot \mathbf{n} + \mathbf{q}_h\cdot \mathbf{n} - + \tau (u_h - \lambda_h)>_{\partial \mathcal{T}} + + \tau (u_h - \lambda_h)\right>_{\partial \mathcal{T}} &=& - <\mu, g_N>_{\partial\Omega_N}, + \left<\mu, g_N\right>_{\partial\Omega_N}, \quad \forall \mu \in \mathcal{M}_h^p. @f} diff --git a/deal.II/examples/step-51/doc/results.dox b/deal.II/examples/step-51/doc/results.dox index 96eabb1724..d9b3bae675 100644 --- a/deal.II/examples/step-51/doc/results.dox +++ b/deal.II/examples/step-51/doc/results.dox @@ -168,10 +168,10 @@ runtime of the program. This also gives a clear indication of where an improvement makes most sense.
    -
  1. Better linear solvers: We use a GMRES iterative solver without +
  2. Better linear solvers: We use a BiCGStab iterative solver without preconditioner, where the number of iteration increases with increasing problem size (the number of iterations for Q1 elements and global - refinements start at 8 for the small sizes but increase up to 2592 for the + refinements start at 35 for the small sizes but increase up to 701 for the largest size). To do better, one could for example use an algebraic multigrid preconditioner from Trilinos. For diffusion-dominated problems as the problem at hand with finer meshes, such a solver can be designed that @@ -180,5 +180,5 @@ improvement makes most sense.
  3. Speed up assembly by pre-assembling parts that do not change from one cell to another (those that do neither contain variable coefficients nor - mapping-dependent terms. + mapping-dependent terms).