On 12/3/22 03:38, Masoud Ahmadi wrote:
My expectation stems from the fact that I am using the exact same mesh, but
instead of using "GridGenerator" function of dealii, this time I import a mesh
from Cubit. Then, I mark the boundaries in the same order: left: 1, right: 2,
bottom: 3, up: 4. So, I think I did the exact same thing.
What happens is the order of DoF numbering changes (as shown in the pictures).
But since my mesh is the same, and so are the boundary IDs, I expect the
results to be as I described since "DoFTools::make_periodicity_constraints"
function gets the boundary IDs as inputs.
What I'm trying to say is that just because the two meshes describe the same
geometric region in space does not mean that they are constructed in the same
way. GridGenerator may use a different numbering of vertices than the imported
mesh, for example.
So I'll come back to the original question: Is what happens actually wrong? Or
is it just unexpected?
Best
W.
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