On 11/27/18 6:56 PM, Oleg Kmechak wrote:
>
> But you can't set boundary indicators on faces
> that are not actually at the boundary.
>
>
> You mean that I can't set Dirichlet Conditions on such structure as the tree
> above?
> Cos this feature is critical for my work
What I'm saying is that you can't set boundary indicators on faces between two
cells (i.e., on *interior* faces). That's because these are not actually on
the *boundary*.
If you want to set conditions on degrees of freedom in the interior of the
domain, you need a different approach. The easiest way is to make sure that
the faces where you want to set boundary conditions are really at the boundary
-- i.e., these faces have exactly one adjacent cell; but you can have two
faces each bounding one cell at the physically same location: these are then
boundary faces.
Other approaches are to copy the logic of interpolate_boundary_values() and
make it work on interior faces that you mark through some other approach.
Best
W.
--
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Wolfgang Bangerth email: bange...@colostate.edu
www: http://www.math.colostate.edu/~bangerth/
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