# Coupled Mechanic-Acoustic Eigenvalues in a Fluid Filled Pipe¶

All the files in this tutorial can be downloaded here.

We consider a fluid filled pipe in an axi-symmetric setting. Three eigenvalue analyses are done, first for the individual problems (fluid only, pipe only) and then for the coupled case.

1. Look at the geometry definition in the Cubit journal file pipe.jou
2. Go through the simulation input mech-acou-eigenvalues.xml. The material file mat.xml is pretty standard
3. Run the simulation using the run-script run.sh
4. Look at the mode shapes for the different sequence steps. You can use the provided paraview state file coupled-visualization.pvsm