Freecad CfdOF Tutorial #10: Organ Pipe

Simulation of the organ pipe. This video shows you how to perform a transient simulation, the flow is assumed to be laminar. For an acoustic simulation, the simulation model must be changed from incompressible (PimpleFoam) to compressible (rhoPimpleFoam). The reason for this change and how to change is displayed in this video tutorial.

See the FreeCad forum for further information: https://forum.freecad.org/viewtopic.p...
Please note that 2D modeling has changed. More details can be found in the FreeCad forum: https://forum.freecadweb.org/viewtopi...

0:00 Introduction
1:14 dimensions of the organ pipe
2:58 analytical determination of the expected frequencies
3:29 building up the model with the part design workbench
10:19 definition of the refinements with the part workbench
12:46 CfdOF (incompressible approach)
20:44 Solver (incompressible approach)
21:50 Solution for incompressible approach, Paraview
28:50 Review of the results for incompressible approach
30:09 Change from PimpleFoam (incompressible) to rhoPimpleFoam (compressible)
42:09 Results in Paraview (compressible)
49:09 Conclusions