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

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

Transactions on Aerospace Research
Volume 2024 (2024): Issue 4 (December 2024)
By: Valery Oliynik and  Tetyana Batutina  
Open Access
|Dec 2024

Figures & Tables

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.
DOI: https://doi.org/10.2478/tar-2024-0023 | Journal eISSN: 2545-2835
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Language: English
Page range: 66 - 79
Submitted on: Oct 25, 2024
|
Accepted on: Dec 2, 2024
|
Published on: Dec 30, 2024
Published by: ŁUKASIEWICZ RESEARCH NETWORK – INSTITUTE OF AVIATION
In partnership with: Paradigm Publishing Services
Publication frequency: 4 issues per year
Keywords:
turbulence,
supersonic jet,
rocket noise,
obstacle,
acoustic loads
Related subjects:
Engineering,
Introductions and overviews,
Engineering, other,
Geosciences,
Geosciences, other,
Materials sciences,
Materials sciences, other,
Physics,
Physics, other

© 2024 Valery Oliynik, Tetyana Batutina, published by ŁUKASIEWICZ RESEARCH NETWORK – INSTITUTE OF AVIATION
This work is licensed under the Creative Commons Attribution-NonCommercial-NoDerivatives 4.0 License.

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