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

Figure 18

Coefficient of total hydrodynamic force in z- and x-directions with respect to time. Compared with three mass ratio spheres, = 1.2, 2.7, 7.8, respectively. Each sphere has the same half-half surface condition. The instant time when the sphere impacts on the free water surface is defined as t = 0 ms.

(a)

(b)