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Semiempirical Model of the Acoustics of a Supersonic Jet Upon Collision with a Perpendicular Wall

Valery Oliynik

Valery Oliynik

Institute of Hydromechanics of the National Academy of Sciences of UkraineKyiv, Ukraine
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Oliynik, Valery
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Tetyana Batutina

Tetyana Batutina

State Enterprise MK Yangel Pivdenne Design BureauDnipro, Ukraine
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Batutina, Tetyana
  
Dec 30, 2024
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Article Category: Review Article
Published Online: Dec 30, 2024
Page range: 66 - 79
Received: Oct 25, 2024
Accepted: Dec 02, 2024
DOI: https://doi.org/10.2478/tar-2024-0023
Keywords
© 2024 Valery Oliynik et al., published by Sciendo
This work is licensed under the Creative Commons Attribution-NonCommercial-NoDerivatives 4.0 International License.

Fig. 1.

Schematic representation of a free rocket jet, showing its principal dimensions and the distribution scheme of discrete acoustic sources along the jet’s centerline.
Schematic representation of a free rocket jet, showing its principal dimensions and the distribution scheme of discrete acoustic sources along the jet’s centerline.

Fig. 2.

The universal distribution of the acoustic power along the supersonic jet.
The universal distribution of the acoustic power along the supersonic jet.

Fig. 3.

The universal frequency distribution of the acoustic power for the s-th jet cross-section.
The universal frequency distribution of the acoustic power for the s-th jet cross-section.

Fig. 4.

The directivity index of the supersonic jet according to [11,18].
The directivity index of the supersonic jet according to [11,18].

Fig. 5.

Redistribution of discrete acoustic sources in a jet bounded by a normal wall (top) and modeling of acoustic reflection (bottom).
Redistribution of discrete acoustic sources in a jet bounded by a normal wall (top) and modeling of acoustic reflection (bottom).

Fig. 6.

The overall level of acoustic loads and the substantial components contributing to it, plotted with respect to the distance between the nozzle and the wall.
The overall level of acoustic loads and the substantial components contributing to it, plotted with respect to the distance between the nozzle and the wall.

Fig. 7.

The octave spectra of acoustic loads for different distances from the wall.
The octave spectra of acoustic loads for different distances from the wall.
Language:
English
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