Numerical simulation of sphere water entry problem using Eulerian-Lagrangian method

This paper looks at the hydrodynamic's numerical simulation of a free-falling sphere impacting the free surface of water by using the coupled Eulerian-Lagrangian (CEL) formulation included in the commercial software ABAQUS. A 3D model of a sphere with an unsteady viscous transient flow condition is used for numerical simulation. The simulation is performed for sphere with different density. The simulation results are verified by showing the computed shape of the air cavity, displacement of sphere, pinch-off time and depth that agree well with experimental results. (C) 2013 Elsevier Inc. All rights reserved.