Research Article

Numerical Investigation of Water Entry of Half Hydrophilic and Half Hydrophobic Spheres

Figure 17

Displacement, velocity, and accelerations in z- and x-directions as a function of time. Compared with three density ratio spheres, = 1.2, 2.7, 7.8, respectively. Three spheres have the same half-half surface condition: = 120°/60°. The instant time when the sphere impacts on the free water surface is defined as t = 0 ms.