A study on the cavitation vortex dynamics and loads of water-exiting axisymmetric projectile

This paper analyzes the cavitation vortex dynamics and load characteristics of projectiles launched underwater at different angles attack. The results show that as velocity projectile decreases during cruising stage number continuously increases, cavity begins to shed. phenomenon occurs because development a re-entrant jet end cavity. As angle attack (0°–8°) asymmetry is strengthened scale shedding increases. prevents generation hairpin packages. more pronounced in cavities with larger increases (4°–8°), turbulent structures wall free wake are further developed enriched. legs vortices significantly elongated large attack, which may be result combined effect transition area. During water-exiting stage, collapse isolated vacuoles generated by flow generates significant load. position undergoes least two pressure pulsation peaks or first peak increase occurring initial stage.