Supersonic coaxial jet noise predictions
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Supersonic coaxial jet noise predictions

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Published by National Aeronautics and Space Administration, National Technical Information Service, distributor in [Washington, D.C.], [Springfield, Va .
Written in English

Subjects:

  • Aeroacoustics.,
  • Boundary layer equations.,
  • Coaxial flow.,
  • Jet aircraft noise.,
  • Mixing length flow theory.,
  • Noise prediction (Aircraft),
  • Noise reduction.,
  • Supersonic jet flow.,
  • Turbulence models.

Book details:

Edition Notes

StatementMilo D. Dahl and Philip J. Morris.
SeriesNASA technical memorandum -- 106917.
ContributionsMorris, P. J., United States. National Aeronautics and Space Administration.
The Physical Object
FormatMicroform
Pagination1 v.
ID Numbers
Open LibraryOL15413486M

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Supersonic coaxial jet noise predictions. [Milo D Dahl; Philip J Morris; United States. National Aeronautics and Space Administration.] Book Microform: National government publication: Microfiche: EnglishView all editions and formats: # Supersonic jet flow\/span> \u00A0\u00A0\u00A0 schema: Supersonic Coaxial Jets: Noise Predictions and Measurements NASA/TM— May AIAA–98– The NASA STI Program Office in Profile Since its   Supersonic Coaxial Jets: Noise Predictions and Measurements Milo D. Dalai Lewis Research Center, Cleveland, Ohio Dimitri Papamoschou University of California, Irvine, California of calculating the radiated supersonic jet noise and the results from experimental ://   Analytical Predictions and Measurements of the Noise Radiated from Supersonic Coaxial Jets ¤ NASA John H. Glenn Research Center at Lewis Field, Cleveland, Ohio and Dimitri Papamoschou† University of California, Irvine, Irvine, California

  Berton ET AL Noise predictions for a supersonic business jet Still, it is thought that a departure from normal reference procedures could be permitted if computer-controlled automatic throttle scheduling is used, making pilot initiation unneces-sary. An automatic digital engine control implementation of a programmed thrust lapse could The present understanding of jet noise generation mechanisms and noise predictions is then presented. It is shown that there remain two competing explanations of many observed phenomena. The ability of the different approaches to predict jet noise is assessed. Both subsonic and supersonic jets are ://   Large-Scale Jet Noise Testing, Reduction and Methods Validation 'EXEJET': 3. Acoustic Simulation of Coaxial Hot Air Jets Using Cold Helium-Air Mixture Jets. Dimitri Papamoschou ; Supersonic jet noise predictions using a unified asymptotic approximation for the adjoint vector Green’s function and LES :// Investigation of high supersonic jet noise: non-linear propagation effects and flow-acoustics correlations. Refraction effects on far-field noise predictions and sources distribution of coplanar coaxial jet flows. Carlos Ilario da Silva, Julio Meneghini, Flow and Noise Predictions

  Predictions are made for the noise radiation from supersonic, coaxial jets. These predictions are based on the assumption that the noise radiation in the downstream direction of supersonic jets is dominated by sound generated by instability waves with supersonic phase velocities relative to ambient. Since the analysis requires a known mean flow and the coaxial jet mean flow is not described 12D/abstract. NOISE FROM SUPERSONIC COAXIAL JETS, PART 1: MEAN FLOW PREDICTIONS NOISE FROM SUPERSONIC COAXIAL JETS, PART 1: MEAN FLOW PREDICTIONS Dahl, M.D.; Morris, P.J. Recent theories for supersonic jet noise have used an instability wave noise generation model to predict radiated noise. This model requires a known mean flow that has typically been In this paper, predictions are made of noise radiation from single, supersonic, axisymmetric jets. We examine the effects of changes in operating conditions and the effects of simulated enhanced mixing that would increase the spreading rate of the jet shear layer on radiated noise :// /Supersonic-Jet-Noise-Reductions-Predicted-With. COVID Resources. Reliable information about the coronavirus (COVID) is available from the World Health Organization (current situation, international travel).Numerous and frequently-updated resource results are available from this ’s WebJunction has pulled together information and resources to assist library staff as they consider how to handle coronavirus