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Numerical Investigation Of The Effect Of Projectile Mass And Drop Height From Water Surface On Pinch-Off Time And Depth, Mohammad Hossein Taghizadeh Valdi, Mohammad Reza Atrechian
Numerical Investigation Of The Effect Of Projectile Mass And Drop Height From Water Surface On Pinch-Off Time And Depth, Mohammad Hossein Taghizadeh Valdi, Mohammad Reza Atrechian
Journal of Marine Science and Technology
In this study, the water entry problem of spherical projectile was numerically simulated by the commercial finite element code Abaqus, and the effect of increasing the projectile mass and drop height from free water surface on deepwater displacement, viscous dissipation energy as well as pinch-off time and depth was investigated. An explicit dynamic analysis method was employed to model fluid-structure interactions using a Coupled Eulerian-Lagrangian (CEL) formulation. Accuracy of the numerical methodology and employed algorithm was verified by comparing the numerical results with the available experimental observations including shape of the air cavity and pinch-off time and depth. The results …