Using ICEM mesh in FEniCS

Dear all,

I have created a structured simplicial mesh within ICEM that I would like to import and use within FEniCS. I would be grateful for any help on this matter.

This is the code I use to convert the mesh:

meshio-convert test.msh test.xdmf --input-format ansys

This is the code that I am using to import the geometry:

mesh = Mesh()
with XDMFFile('test.xdmf') as infile:
    infile.read(mesh)

and it results in the following error:

*** Error:   Unable to recognise cell type.
*** Reason:  Unknown value "mixed".
*** Where:   This error was encountered inside XDMFFile.cpp.
*** Process: 0

Here is the .msh:

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Your mesh file likely has multiple types of elements defined. E.g. a mix of simplices and lines. You can use meshio to read the mesh, prune the data to only simplices, then write the XDMF file.

Thank you for your reply Nate. I have tried to prune the mesh (so far unsuccessfully) using the --prune syntax.

Could you kindly provide me with the syntax? I am unsure what I should be placing after --prune

See, e.g., this tutorial, part 2.