On Tue, Mar 8, 2016 at 4:14 AM, <hu.b...@xemail.me> wrote: > Hello everybody, > I am quite new to libmesh and finite element methods in general, so there > are some things not very clear for me from the beginning. > So I wonder if there is any page where more general things are written > like a wiki or so? > As an example I wander which kind of 'system' is the best for the > particular system I am interested at: Currently > I am using Condensed_Eigen_system but I don't know what actually is the > difference to Eigen_system? >
The difference is that CondensedEigenSystem allows you to make a smaller eigenproblem with constrained dofs removed. The reason for this is that constrained dofs can give spurious eigenvalues, so it's sometimes better to just remove them. You can look at the eigenvalue problem examples for more info. The first two examples use EigenSystem, and the third one uses CondensedEigenSystem. David ------------------------------------------------------------------------------ Transform Data into Opportunity. Accelerate data analysis in your applications with Intel Data Analytics Acceleration Library. Click to learn more. http://makebettercode.com/inteldaal-eval _______________________________________________ Libmesh-users mailing list Libmesh-users@lists.sourceforge.net https://lists.sourceforge.net/lists/listinfo/libmesh-users
