Periodic bc for dim=1

[Praveen C]

Dear all

I was trying to write a code that works for 1/2/3d navier stokes.

But it seems like collect_periodic_faces does not work for 1d ? Is this the case, and is there any other way to deal with this situation ?

Thanks
praveen

[Peter Munch]

What do you mean by "does not work for 1D"? In hyper.deal (https://github.com/hyperdeal/hyperdeal), we also have PBC in "1D".

Peter

[Praveen C]

I am getting compilation error

[100%] Linking CXX executable main
Undefined symbols for architecture arm64:
"void dealii::GridTools::collect_periodic_faces<dealii::parallel::distributed::Triangulation<1, 1> >(dealii::parallel::distributed::Triangulation<1, 1> const&, unsigned int, unsigned int, int, std::__1::vector<dealii::GridTools::PeriodicFacePair<dealii::parallel::distributed::Triangulation<1, 1>::cell_iterator>, std::__1::allocator<dealii::GridTools::PeriodicFacePair<dealii::parallel::distributed::Triangulation<1, 1>::cell_iterator> > >&, dealii::Tensor<1, dealii::parallel::distributed::Triangulation<1, 1>::space_dimension, double> const&, dealii::FullMatrix<double> const&)", referenced from:
CGSEM<1>::setup_box_grid() in cgsem.cc.o
ld: symbol(s) not found for architecture arm64
clang: error: linker command failed with exit code 1 (use -v to see invocation)

Maybe I am doing something wrong.

Thanks
praveen

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[Marc Fehling]

Hello Praveen,

the parallel::distributed::Triangulation class is not instantiated for dim=1, only for dim>1. The reason behind it is that p4est does not allow to create 1D domains. With any other Triangulation class you should be fine.

Marc