whistle-noise

Repository with the complete numerical setup for the direct noise simulation of a sports whistle based on OpenFOAM.

Execute bash launch.sh to run the simulation.

Folders:

• case: OpenFOAM case
• mesh: script for Gmsh mesh generation with python API + yml files with the parameters
• model: FreeCAD file with the model and script to extract the coordinates of interest

Disclaimer

This setup is not validated and not fully tested. No convergence study was performed and selected models may not be the best.

Known limitations and aspects to improve

• Setup can be improved in terms of sponge zones and domain size.
• Mesh is most probably too fine for URANS and too coarse for LES, need to check.
• Geometry is simple enough that a fully structured mesh can be envisioned. The use of a fully quad/hexa mesh is also recommended.
• Numerical scheme can probably be improved, not everything is second order.
• Direct noise is simulated, mesh could be reduced by reducing the size of the domain and combining it with propagation models.

TODO

• upload the post-processing scripts
• add dependencies list