Development of nonlinear acoustic propagation analysis tool toward realization of loud noise environment prediction in aeronautics

Journal Article · Wed Oct 28 00:00:00 EDT 2015 · AIP Conference Proceedings

DOI:https://doi.org/10.1063/1.4934470· OSTI ID:22492654

Kanamori, Masashi; Takahashi, Takashi; Aoyama, Takashi ^[1]

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1. Japan Aerospace Exploration Agency, 7-44-1, Jindaijihigashi-machi, Chofu, Tokyo (Japan)

Shown in this paper is an introduction of a prediction tool for the propagation of loud noise with the application to the aeronautics in mind. The tool, named SPnoise, is based on HOWARD approach, which can express almost exact multidimensionality of the diffraction effect at the cost of back scattering. This paper argues, in particular, the prediction of the effect of atmospheric turbulence on sonic boom as one of the important issues in aeronautics. Thanks to the simple and efficient modeling of the atmospheric turbulence, SPnoise successfully re-creates the feature of the effect, which often emerges in the region just behind the front and rear shock waves in the sonic boom signature.

• OSTI ID: 22492654
• Journal Information: AIP Conference Proceedings, Vol. 1685, Issue 1; Conference: 20. international symposium on nonlinear acoustics, Ecully (France), 29 Jun - 3 Jul 2015, 2. international sonic boom forum, Ecully (France), 29 Jun - 3 Jul 2015; Other Information: (c) 2015 AIP Publishing LLC; Country of input: International Atomic Energy Agency (IAEA); ISSN 0094-243X
• Country of Publication: United States
• Language: English

Related Subjects

71 CLASSICAL AND QUANTUM MECHANICS
GENERAL PHYSICS
BACKSCATTERING
DIFFRACTION
FORECASTING
NOISE
NONLINEAR PROBLEMS
SHOCK WAVES
SIMULATION
SOUND WAVES
TURBULENCE
WAVE PROPAGATION