Computational Aerodynamics of an AK-47 Rifle's 70.82 mm Bullet in Proximity to a Near Wall

Abstract

Computational Fluid Dynamics was used to study the flow around an AK-47 Assault Rifle© 7.82-mm bullet in proximity to a near wall at Mach 2. The computational methodology was validated against the previously existing computational data. In metropolitan battles situations, the projectiles are fired in close proximity to the ground. The presence of ground prompts an asymmetric pressure distribution over the surface of the bullet. The reflection of shock waves after hitting the wall is considered particularly. From the earliest stage to the influence around the shot; the level of impact is subjected to the ground clearance. Streamlines across the projectile and related surface pressure distribution acquired from computational iterations are described. Clearances with 0.5 and 1 height/diameter ratio were studied to examine the transitions in aerodynamic coefficients like lift, drag, and moment.