On 3/17/21 10:41 PM, Anton Ermakov wrote:
Thanks for the reply. I think I got it. Basically, I had to manually place the
local matrices into the global matrix, without taking into account the hanging
node constraints, which are later taken care of by
/constraints.condense(system_matrix, system_rhs);/
In the case of the mass matrix, I had to use this:
/for (unsigned int i = 0; i < dofs_per_cell; ++i)/
/for (unsigned int j = 0; j < dofs_per_cell; ++j)/
/mass_matrix.add(local_dof_indices[i], local_dof_indices[j], cell_matrix(i,
j));/
Instead of
/constraints.distribute_local_to_global(cell_matrix, local_dof_indices,
mass_matrix);/
Ah yes, that makes sense. So do I understand right that whatever you have now
actually works?
Best
W.
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