Effect of Nozzle-Plate Distance on Acoustic Phenomena from Supersonic Impinging Jet

Akamine, Masahito; Okamoto, Koji; Gee, Kent L.; Neilsen, Tracianne B.; Teramoto, Shinji; Okunuki, Takeo; Tsutsumi, Seiji

doi:10.2514/6.2016-2930

Cited by 3 publications

(1 citation statement)

References 19 publications

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“…In the present study, experiments were carried out to discuss the effect of the plate angle on this acoustic phenomenon. By applying the acoustic-triggered conditional sampling to the Schlieren visualization movies, which was proposed by the authors 10 , the phenomena around the impingement region were observed in detail. The results revealed that the plate-angle variation leads to the change in the characteristics of the acoustic waves from the impingement region, such as the source locations.…”

Section: Session Abstractsmentioning

confidence: 99%

Summary of “Supersonic Jet and Rocket Noise”

Gee

Lubert

Wall

et al. 2017

Proceedings of Meetings on Acoustics

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Section: Session Abstractsmentioning

confidence: 99%

Summary of “Supersonic Jet and Rocket Noise”

Gee

Lubert

Wall

et al. 2017

Proceedings of Meetings on Acoustics

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Optimization of overall sound pressure level of underexpanded impinging jets at low and moderate Mach numbers

Sarangi,

Karthik,

Srinivasan

2023

J Braz. Soc. Mech. Sci. Eng.

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Characterization of Supersonic Laboratory-Scale Jet Noise with Vector Acoustic Intensity

Gee

Akamine

Okamoto

et al. 2017

23rd AIAA/CEAS Aeroacoustics Conference

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A new method for the calculation of vector acoustic intensity from pressure microphone measurements has been applied to the aeroacoustic source characterization of an unheated, Mach 1.8 laboratory-scale jet. Because of the ability to unwrap the phase of the transfer functions between microphone pairs in the measurement of a radiating, broadband source, physically meaningful near-field intensity vectors are calculated up to the maximum analysis frequency of 32 kHz. The new intensity method is used to obtain a detailed description of the sound energy flow near the jet. The resulting intensity vectors have been used with a raytracing technique to identify the dominant source region over a broad range of frequencies. Additional aeroacoustics analyses provide insight into the frequency-dependent characteristics of jet noise radiation, including the nature of the hydrodynamic field and the transition between the principal lobe and sideline radiation. Nomenclature d = spacing between two microphones = nozzle exit diameter , = transfer function between microphones a and b I = time-averaged vector intensity p = acoustic pressure = acoustic pressure magnitude = acoustic pressure phase , ( ) = quadspectrum between microphones a and b 1 Associate Professor, Dept. of Physics and Astronomy, N283 ESC, AIAA Senior Member.

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Effect of Nozzle-Plate Distance on Acoustic Phenomena from Supersonic Impinging Jet

Cited by 3 publications

References 19 publications

Summary of “Supersonic Jet and Rocket Noise”

Summary of “Supersonic Jet and Rocket Noise”

Optimization of overall sound pressure level of underexpanded impinging jets at low and moderate Mach numbers

Characterization of Supersonic Laboratory-Scale Jet Noise with Vector Acoustic Intensity

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