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openfoam/tutorials/incompressible/pimpleFoam/LES/vortexShed
History
Andrew Heather 28aad3a03e RELEASE: Updated headers to v2312
2023-12-20 19:42:55 +01:00
..
0.orig RELEASE: Updated headers to v2312 2023-12-20 19:42:55 +01:00
constant RELEASE: Updated headers to v2312 2023-12-20 19:42:55 +01:00
system RELEASE: Updated headers to v2312 2023-12-20 19:42:55 +01:00
Allclean STYLE: regularize quoting and exit on failed 'cd' 2019-11-13 13:19:16 +01:00
Allrun TUT: incompressible: clean up tutorials 2021-06-08 20:15:47 +00:00
README.md TUT: incompressible: clean up tutorials 2021-06-08 20:15:47 +00:00
surface.obj TUT: Updated vortexShed case wrt latest Curle FO updates 2020-06-18 21:55:44 +01:00

README.md

Summary

  • Vortex street generated from flow over a sphere
  • Acoustic pressure is calculated based on Curle's analogy
  • noise utility is processes the acoustic pressure to obtain frequency information

Case detailis

  • cylinder diameter: 0.04
  • flow speed: 0.025
  • kinematic viscosity: 1e-5
  • Reynolds number based on cylinder diameter, Red = 100
  • For this Red, St = 0.198(1 - 0.197/Red) = 0.159
  • Shedding fequency, f = St*U/d = 0.1 Hz

Plotting the FFT of the pressure field shoud show a peak at the shedding frequency