Numerical Investigation of the Flow Structure and Acoustical Noise in a Suppressor
[ X ]
Tarih
2024
Yazarlar
Dergi Başlığı
Dergi ISSN
Cilt Başlığı
Yayıncı
World Scientific Publ Co Pte Ltd
Erişim Hakkı
info:eu-repo/semantics/closedAccess
Özet
The noise created when a firearm is fired has a lot of adverse effects on humans and the environment, so analyzing and attenuating this noise is essential. This study aimed to examine propellant flow and the sound generated by this flow using a hybrid computational fluid dynamics and computational aeroacoustics method. The compatibility of this numerical study was also validated by comparing it with the experimental result. The impact of critical parameters, such as the shape and number of baffles of the suppressor, was studied. Finally, the overpressure and acoustics results of different suppressors were compared with each other and with the unsuppressed condition. According to the result, the suppressor with curved baffles shows a better performance. When the exit pressure at the tip of suppressor compared to the initial inlet pressure to the suppressor the percentage drop in overpressure was 76.01%, 78.79% and 81.3% for the suppressor with one, three and five curved baffles, respectively. For condition without suppressor, 169.49dB of SPL was recorded. When using a suppressor without a baffle, this value was reduced to 162.13dB. For the suppressor with one, three and five curved baffles, the SPL value was 160.234dB, 159.43dB and 158.11dB, respectively. Generally, this study shows that the suppressor's efficiency is directly proportional to its shape and number of baffles.
Açıklama
Anahtar Kelimeler
Noise control; aeroacoustics; overpressure reduction; blast wave; suppressor
Kaynak
Fluctuation and Noise Letters
WoS Q Değeri
N/A
Scopus Q Değeri
Q1
Cilt
23
Sayı
3
