Triangulation from lower-dimensional object

[Konrad Simon]

Dear all,

I was recently looking for a solution to the following problem:

I have a triangulation, e.g., of a unit cube. I need to solve a lower-dimensional (FEM-like) problem on all faces with BCs on edges and for each face I need to solve a problem on all edges with BCs at vertices.

Can I somehow extract a Triangulation<dim-1> form a Triangulation<dim> by providing, for example, the boundary id on the Triangulation<dim> level?

Best,
Konrad

[Wolfgang Bangerth]

On 2/17/22 02:48, Konrad Simon wrote:
>
> Can I somehow extract a Triangulation<dim-1> form a Triangulation<dim> by
> providing, for example, the boundary id on the Triangulation<dim> level?

Yes! Take a look at GridGenerator::extract_boundary_mesh().

Best
W.

--
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Wolfgang Bangerth email: bang...@colostate.edu
www: http://www.math.colostate.edu/~bangerth/