Hydrodynamics of passing-over motion during binary droplet collision in shear flow

Wang Cheng-Yao¹, Zhang Cheng-Bin¹, Huang Xiang-Yong², Liu Xiang-Dong², Chen Yong-Ping^{1, 2, †,}

Effect of size difference on droplet rheological behaviors (Co = 0.16, Ca = 0.10, k = 0.6 ∼ 1): (a) (i) deformation for droplet 1, (ii) deformation for droplet 2; (b) (i) local pressure field (k = 1, scale bar = 300 μm), (ii) local pressure field (k = 0.8), (iii) local pressure field (k = 0.6).