[Dune] A problem in dune-grid
Christian Engwer
christian.engwer at uni-muenster.de
Wed Sep 26 00:13:52 CEST 2018
Hi Shim,
welcome to dune :-)
On Tue, Sep 25, 2018 at 08:50:56PM +0000, Shim, Miseon wrote:
> Dear All,
>
> I hope you are doing well!
>
>
> A problem was occurred when I used dune-grid via duneuro-py. The error message is as follows:
>
>
> RuntimeError: GridError [createGrid:/Dune/dune-grid/dune/grid/uggrid/uggridfactory.cc:275]: You have supplied 868420 parametrized boundary segments, but the coarse grid has only 119990 boundary faces!
>
> What is the meaning of this error?
If you construct/read a mesh, you can assign a boundary
parametrization (the boundary segment) to each foundary face of the
mesh. In your case UG reports, that you have roughly 8 times as many
boundary segments as you have faces. This sound pretty much as if your
mesh is already invalid.
- Are you reading a gmsh file? Or how are you constructing the mesh?
- Can you provide the mesh file (or a minimal example)?
> Is there a limitation for the number of boundary segments?
If I remember UGGrid correctly, there is a limitation, but this is not
your problem here and I doubt that you will hit this limit.
> Should I reduce the number of segments?
Does this mean that you manually specify the segments?
Best
Christian
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