Dear Prof. Bangerth,
I have now reproduced the above issue in the attached minimal example.
Below is the algorithm of the minimal example
1) Create a hypercube (-20,20) with origin at the center
2) Set periodic boundary conditions on all faces of the hypercube
3) Refine mesh by first doing
On 08/11/2018 09:37 AM, georgios.sialou...@gmail.com wrote:
I would be most grateful for your help on the following matter. I am solving
a combined stokes-laplace problem (have a vector valued solution). I am
trying to calculate the hdiv norm on the first two components of my solution
On 08/12/2018 12:30 AM, chucui1...@gmail.com wrote:
So I cannot make sure the continuity of the gradient in boundary or internal
faces. But I don' know how to implement what I need? Maybe some penalty part
like in Discontinuous Gradient Method to make up for continuity of the gradient?
Yes,
Dear Daniel and Wolfgang,
Thank you very much! In fact, I only want the gradient of periodic, not the
Dirichlet periodic boundary. I thought they are same in periodic boundary
conditions before, i.e. all informations of the solution on the face pairs
are same. Now, I get that I have made
