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Duct Acoustics

Basic Theory

  1. duct acoustic fundamentals
  2. bsiac green function
  3. duct mode detect
  4. Extend:NonlinearDuctAcoustics
  5. Extend:Winer-Hopf
  6. Extend learning: cascade-scattering

Swirl duct acoustic

  • Aim: Reproduce the Green function in swirl duct using collocation method.
  • Ref: James Mathews-GreenSwirl-PhD thesis.
  • Reqiure: add Chebfun in to subpackage; tecplot for visulization.

Results:

CaseName Link Info
01 monopole.gif
02 dipole.gif
03 rotatingNoise.gif Reverse-recording
04 shellVibration.gif Zoom in the Deformation effect
05 Gw.gif
06 Tw1.gif
07 Tw2.gif
08 Tw3.gif