Chucui, in the end you program is very similar to step-6. Do you observe the same behavior there as well? If not, try to find the changes that are responsible for the quickly increasing norm. Do the results of your computation look reasonable?
And the version of deal.ii I use is 8.5.1, which doesn't have the updated > class AffineConstraints <number>, but have Constraint_matrix Class. I don't > know if this is the key point. Need I update my deal.ii? > No, that should not be related at all. Best, Daniel -- The deal.II project is located at http://www.dealii.org/ For mailing list/forum options, see https://groups.google.com/d/forum/dealii?hl=en --- You received this message because you are subscribed to the Google Groups "deal.II User Group" group. To unsubscribe from this group and stop receiving emails from it, send an email to [email protected]. For more options, visit https://groups.google.com/d/optout.
