[deal.II] Mesh generation issue

Hi all, I was trying to adapt the mesh generation method introduced by Konstantin Ladutenko posted here: https://groups.google.com/forum/#!searchin/dealii/sphere$20mesh%7Csort:date/dealii/pvqNQUM3eyM/o0USYKbGBQAJ But even though I ran exactly the same code, I got a messed-up mesh (see attache

Re: [deal.II] interpolating boundary values from a previously found FE solution

Dr. Bangerth Is there any example tutorial related to the first approach? *"You can build a ConstraintMatrix object that sets boundary DoFs of V to the corresponding values of U. This should be easy to do." * On Friday, March 30, 2018 at 8:15:23 AM UTC-5, Wolfgang Bangerth wrote: > > On 03/29

[deal.II] Adding rows on system matrix connecting to dof

Hi, all I have a question on using deal.ii for solving unknown boundary condition problem. I have thought the most minimized related to my question. where I consider a navies slip boundary condition, and I have tried to solve this with finite difference. For more demonstration please see fol