Aeroacoustics: Jet noise, combustion and core engine noise, Volume 1; Volume 43
American Institute of Aeronautics and Astronautics, 1976 - Science - 612 pages
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New Evidence of Subsonic Jet Noise Mechanisms
Simulation by Vortex Rings of the Unsteady
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Aeroacoustics aerodynamic AIAA aircraft airframe noise analysis anechoic chamber angle axial Bernoulli enthalpy combustor configuration core engine noise correlation function cross-correlation density direction distribution downstream duct acoustics effects equation far-field flame flame holder flight Fluid Mechanics frequency gradient intensity interaction investigation jet axis jet flow jet noise jet velocity Lighthill linear located Mach number Mach waves measurements mechanisms microphone mixing noise NASA noise levels noise reduction noise sources nozzle nozzle exit obtained paper parameter peak plane potential flow prediction premixed flames present pressure field pressure fluctuations probe problem radiation ratio refraction region Ribner self-noise shadowgraphs shear layer shear-noise shown in Fig signal sound field sound pressure sound pressure levels source terms spectra spectrum speed static Strouhal number subsonic jet supersonic Supersonic Jet suppressor swirl tailpipe techniques temperature theoretical theory tion tube turbojet turbulent vortex rings vorticity wave propagation