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

Figure 13

Side and top views of the half-half case taken 23 ms after impact. The sphere is dropped from height h = 300 mm above the free water surface, corresponding to an impact speed = 2.37 m/s and sphere mass ratio . The sphere surface is hydrophilic on the right side, = 30°, and is hydrophobic on the other, = 150°.