On 2021-05-05 20:02, John Peterson wrote:
Hi Edgar,
Sorry for not responding, your email got kind of lost in my inbox.
Not at all. Thank you very much. I can only imagine how busy you are :)
.
LibMesh does support penalty BCs, some examples which use penalty BCs
are: adjoints_ex1,2,4; adaptivity_ex1,2,4. It sounds like you may be
interested in DirichletBoundary objects, which impose the BCs as
user-defined constraints. Examples using DirichletBoundary objects are:
adaptivity_ex3; adjoints_ex5,6,7; fem_system_ex1,3,4. The
implementation of
DirichletBoundary objects corresponds to the description you gave in
your
original email about modifying the matrix and rhs.
This is super useful. Thanks!
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