@Daniel: Thanks. I just tried Jean-Paul's approach again, but with a new procedure. It worked. If I could, I would mark both of your comments as the best answer.
Thank you everyone, again :) I will not forget your kind assistance and hopefully help you also soon, if possible. <https://lh3.googleusercontent.com/-8HHh-VD1X-0/WJi03gsZJ4I/AAAAAAAAAGA/14JN5wIMKpcDMkPtCCbVPvPHXWQxZSkfQCLcB/s1600/config_forces.png> Kind regards, S. A. Mohseni -- 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 dealii+unsubscr...@googlegroups.com. For more options, visit https://groups.google.com/d/optout.
