Proceedings of the International Conference on Recent Advances in Materials, Processes and Technology for Sustainability (RAMPTS 2025)

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Acoustic Analysis of Supersonic Jet Impingement on Flat and Grooved Plates Using a Double Parabolic Nozzle in an Anechoic Chamber

Authors
K. Geno John1, *, A. K. Mubarak1
1Department of Mechanical Engineering, Government Engineering College, Thrissur, Kerala, India
*Corresponding author. Email: genojohn2346@gectcr.ac.in
Corresponding Author
K. Geno John
Available Online 25 December 2025.
DOI
10.2991/978-94-6463-922-3_16How to use a DOI?
Abstract

This study presents an experimental investigation into the acoustic characteristics of supersonic jet impingement on two impingement plate configurations: flat and grooved. The experiments were carried out in an anechoic chamber using a Double Parabolic Nozzle. Key parameters varied during the tests include nozzle pressure ratio (ranging from 3.0 to 5.5), L/D ratio (4), and plate inclination angles (45°and 65°). Rigid support structures were designed and fabricated to hold the plates securely in place during jet exposure. An array of twelve microphones was arranged to capture sound pressure level (SPL) data from different directions. Graphical analyses were conducted to evaluate SPL variations with respect to NPR, L/D ratio, and plate angle for both plate types. The results indicate that the grooved plate consistently achieved better noise reduction compared to the flat plate across all tested configurations.

Copyright
© 2025 The Author(s)
Open Access
Open Access This chapter is licensed under the terms of the Creative Commons Attribution-NonCommercial 4.0 International License (http://creativecommons.org/licenses/by-nc/4.0/), which permits any noncommercial use, sharing, adaptation, distribution and reproduction in any medium or format, as long as you give appropriate credit to the original author(s) and the source, provide a link to the Creative Commons license and indicate if changes were made.

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Volume Title
Proceedings of the International Conference on Recent Advances in Materials, Processes and Technology for Sustainability (RAMPTS 2025)
Series
Atlantis Highlights in Material Sciences and Technology
Publication Date
25 December 2025
ISBN
978-94-6463-922-3
ISSN
2590-3217
DOI
10.2991/978-94-6463-922-3_16How to use a DOI?
Copyright
© 2025 The Author(s)
Open Access
Open Access This chapter is licensed under the terms of the Creative Commons Attribution-NonCommercial 4.0 International License (http://creativecommons.org/licenses/by-nc/4.0/), which permits any noncommercial use, sharing, adaptation, distribution and reproduction in any medium or format, as long as you give appropriate credit to the original author(s) and the source, provide a link to the Creative Commons license and indicate if changes were made.

Cite this article

risenwbib
TY  - CONF
AU  - K. Geno John
AU  - A. K. Mubarak
PY  - 2025
DA  - 2025/12/25
TI  - Acoustic Analysis of Supersonic Jet Impingement on Flat and Grooved Plates Using a Double Parabolic Nozzle in an Anechoic Chamber
BT  - Proceedings of the International Conference on Recent Advances in Materials, Processes and Technology for Sustainability (RAMPTS 2025)
PB  - Atlantis Press
SP  - 228
EP  - 242
SN  - 2590-3217
UR  - https://doi.org/10.2991/978-94-6463-922-3_16
DO  - 10.2991/978-94-6463-922-3_16
ID  - John2025
ER  -