Classification of aeroacoustically relevant surface modes in cylindrical lined ducts

  title={Classification of aeroacoustically relevant surface modes in cylindrical lined ducts},
  author={E. Brambley and N. Peake},
  journal={Wave Motion},
  • E. Brambley, N. Peake
  • Published 2006
  • Mathematics
  • Wave Motion
  • Abstract Wave modes in a straight cylindrical duct with a locally reacting boundary and a steady subsonic axial flow are investigated. The duct modes are separated into ordinary duct modes and surface modes confined to a neighbourhood of the boundary. Previous asymptotic results of Rienstra for the surface modes assume that the dimensionless frequency ω is large, and that the azimuthal order m ≪ ω. In this paper, these results are generalized to arbitrary values of m, as applicable to rotor… CONTINUE READING
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