Hydrodynamic Analysis of a Projectile During Discharge

In this study, the fluid forces acting during the discharging process of a projectile were analyzed, along with the surrounding flow field. The process of discharging a projectile from a underwater platform was divided into several stages, and computational analysis was performed to calculate the drag generated during interactions with the underwater platform. For the numerical analysis, the commercial software Fluent 21.1, based on the finite volume method, was used. A steady-state simulation was conducted using a pressure-velocity coupling algorithm. The results showed that the drag gradually increased from its initial minimum value during the discharge. Initially, a force aiding the direction of motion appeared; however, the force was observed to be directionally biased.