Investigation of the effects of volume change on flow structure and acoustic in a silencer

Basit Öğe Kaydı
dc.contributor.authorYimam, Ezedin Ayaliew
dc.contributor.authorDemircan, Tolga
dc.date.accessioned2025-01-21T16:42:12Z
dc.date.available2025-01-21T16:42:12Z
dc.date.issued2023
dc.departmentKırıkkale Üniversitesi
dc.description.abstractThis study numerically examined the propellant flow from gunfire using the k omega-SST turbulence model and their sound attenuation using the Ffowcs-Williams and Hawkins equations (FW-H). For simulation, a pressure-based solver and 3D axisymmetric geometry were used. The second-order implicit time approach and the second-order upwind scheme spatial discretization were used in the simulation. The maximum exit pressure was 3.748 MPa for the suppressor with a length of 70 mm and diameter of 20 mm. However, when the diameter suppressor increased by 1/6, the maximum exit pressure was reduced to 3.4961 MPa. When the length increased by 1/6, the maximum pressure became 3.3636 MPa. Lastly, when the diameter and length were increased by 1/6, the maximum exit pressure became 3.177 MPa. For this suppressor, 20.835 dB (12.29%) sound pressure level attenuation was achieved with 16.823 MPa (84.115%) overpressure reduction and 484.86 K or 32.32% temperature reduction. Generally, the attenuation increased with the increase in the suppressor's internal volume.
dc.identifier.doi10.1177/1475472X231206497
dc.identifier.endpage655
dc.identifier.issn1475-472X
dc.identifier.issn2048-4003
dc.identifier.issue7-8
dc.identifier.scopus2-s2.0-85173447287
dc.identifier.scopusqualityQ2
dc.identifier.startpage639
dc.identifier.urihttps://doi.org/10.1177/1475472X231206497
dc.identifier.urihttps://hdl.handle.net/20.500.12587/25010
dc.identifier.volume22
dc.identifier.wosWOS:001075518900001
dc.identifier.wosqualityQ3
dc.indekslendigikaynakWeb of Science
dc.indekslendigikaynakScopus
dc.language.isoen
dc.publisherSage Publications Inc
dc.relation.ispartofInternational Journal of Aeroacoustics
dc.relation.publicationcategoryMakale - Uluslararası Hakemli Dergi - Kurum Öğretim Elemanı
dc.rightsinfo:eu-repo/semantics/closedAccess
dc.snmzKA_20241229
dc.subjectFlow noise; acoustic attenuation; overpressure reduction; suppressor
dc.titleInvestigation of the effects of volume change on flow structure and acoustic in a silencer
dc.typeArticle

Dosyalar

Koleksiyon

WOS İndeksli Yayınlar Koleksiyonu
Scopus İndeksli Yayınlar Koleksiyonu