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

Figure 12

Top and side views of the water entry of half-half sphere at impact speed = 2.37 m/s. The half-half sphere has an asymmetric wetting surface: on the right side of the sphere, the surface is hydrophilic, = 60°; on the left side of the sphere, the surface is hydrophobic, . The time when the sphere impacts on the free water surface is defined as t = 0 ms.