title: Series expansions of rotating two and three dimensional sound fields.
abstract: The cylindrical and spherical harmonic expansions of oscillating sound fields rotating at a constant rate are derived. These expansions are a generalized form of the stationary sound field expansions. The derivations are based on the representation of interior and exterior sound fields using the simple source approach and determination of the simple source solutions with uniform rotation. Numerical simulations of rotating sound fields are presented to verify the theory.
authors.affiliation: Industrial Research, Ltd, PO Box 31-310, Lower Hutt, New Zealand. m.poletti@irl.cri.nz
authors.forename: M A
authors.initials: MA
authors.lastname: Poletti
mesh_terms: D000162:Acoustics; D003198:Computer Simulation; D008962:Models, Theoretical; D009038:Motion; D009716:Numerical Analysis, Computer-Assisted; D009991:Oscillometry; D011312:Pressure; D012399:Rotation; D013016:Sound; D013018:Sound Spectrography; D013997:Time Factors; D014732:Vibration