I have to use quadratic shape function (Q2 elements) to do my project (2D).
Previously the code works well with Q1 linear elements, when I want to
input the gird with Q2 elements generated by Gmsh, it gives the following
An error occurred in line <1418> of file <../source/grid/grid_in.cc> in
void dealii::GridIn<2, 2>::read_msh(std::istream &) [dim = 2, spacedim
The violated condition was:
The name and call sequence of the exception was:
The Element Identifier <8> is not supported in the deal.II library when
reading meshes in 2 dimensions.
And, it says the supported quad element should have 4 nodes and 4 edges.
Just want to check whether deal.ii support Q2 elements by Gmsh.
My mesh looks like the following
If deal.ii does not support higher order element by Gmsh, what other format
is recommended? Thanks!
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