Something went wrong with the unstructured mesh

User Support
1

Hello everyone!

I want to use the unstructered mesh to tally the model, and I I refer to the following example：
openmc-notebooks/unstructured-mesh-part-i.ipynb at main · openmc-dev/openmc-notebooks · GitHub

When I use the “moab” format, everything is well. But the “libmesh” format is not suppoted. The version of my OpenMC is 13.2(openmc=0.13.2=dagmc_mpi_openmpi_py39hba78020_100), and it is believed that “libmesh” support is satisfied. So this is why?

In addition, the mesh in the example was created by Trelis. Could you please tell me how to export the mesh file with the format “.h5m”? I only export the “.e” format which is satisfied. But the “libmesh” format is not suppoted. I’m really depressed about this.

2

Hi @Jacob. The OpenMC package on conda-forge currently does not support libmesh. If you want an installation of OpenMC with this capability, at the moment your only option is to build from source.

3

OK, thanks so much for your answer!

I’ll try installing OpenMC by building from source.