Numerical Investigation of the Effect of Surface Geometry on Bullet Aerodynamic Behaviours
Küçük Resim Yok
Tarih
2021
Yazarlar
Dergi Başlığı
Dergi ISSN
Cilt Başlığı
Yayıncı
Gazi Univ
Erişim Hakkı
info:eu-repo/semantics/closedAccess
Özet
Developing gun systems require the studying and development of the bullets that are consumable supplies. By the improvement works in the field of materials and geometry, the production of bullets whose destroying forces, ranges, stabilization of movement and access to the target are improved was being studied. In this study, the effect of riblet and dimple formed body surface of a 9 mm parabellum type light core bullet on the aerodynamic flow behaviour around the bullet was discussed. Airflow around the bullet core was investigated by the computational fluid dynamic base software Fluent. The compressible airflow was analysed with the Spalart Allmaras turbulence flow model, considering the viscous effects due to Sutherland's law. In this study, it was concluded that the riblet and dimpled surface formed bullet geometry could lead to an increase of bullet velocity and a decrease in shear stress and drag force. It was evaluated that the dimple and riblet formed bullet surface provides positive contributions to its range as well as stabilization in bullet motion.
Açıklama
Anahtar Kelimeler
Bullet, turbulent flow, riblet and dimpled surface, drag force
Kaynak
Journal of Polytechnic-Politeknik Dergisi
WoS Q Değeri
N/A
Scopus Q Değeri
Cilt
24
Sayı
1
