FSI 3D Upgrade

This page is incomplete

TODO:

This page follows on from the standard FSI installation instructions. Follow those instructions first before continuing with this page.

Modify the adapter for 3D FSI

Download all the files for the 3D version from this Drive folder [todo add link]

Locate this installation location of the FEniCS-preCICE using python3 -m pip show fenicsprecice

Navigate to this location, in my case: cd /home/nik/.local/lib/python3.8/site-packages/fenicsprecice

Replace each file in your installation location with the 3D version you downloaded earlier.

Download this modified tutorial case [todo add link]

Navigate to the solid-fenics folder and do ./run.sh - there should be no errors, and the output should pause after a short setup period.

Now open another Ubuntu terminal, and navigate to the fluid-openfoam folder and do ./run.sh

Both terminals should now have command outputs flying, similar to the original 2D tutorial case you ran when installing the 2D FSI software.

After a while, both terminals should stop. View the results in ParaView, and verify it looks similar to the original 2D tutorial case.

FEniCS sadly does not natively support the import of ANSYS or OpenFOAM meshes, so a workaround must be used to generate its .xml mesh files.

Install meshio with all optional dependencies using python3 -m pip install meshio[all]

Download the foamToFenics OpenFOAM case [todo add link].

Export the ANSYS mesh as .msh
Open an Ubuntu terminal, navigate to the foamToFenics OpenFOAM case, and copy the .msh file there.
Import the mesh with fluentMeshToFoam <your msh file>, replacing <your msh file> with the full filename and extension of your .msh file.
Run ./exportFenics