Drop deformation and breakup with diffuse interface method
Two-dimensional numerical simulation of the deformation and breakup of an isolated liquid drop suspended in immiscible viscous fluid under shear flow was performed with the diffuse interface method. The governing equations of the model were described by Navier-Stokes-Cahn-Hilliard equations. The surface tension was treated as a modified stress. In the paper, the critical Capillary number was plotted as a function of viscosity ratios with the method of approximation. Besides, From the numerical observations, the breakup of the droplets occurred by three mechanisms, namely, necking, end pinching, and capillary instability. Quantitative results for the deformation and breakup of drop are presented.
diffuse interface method deformation and breakup critical Capillary number three mechanisms
S.L.Chen C.Z.Lin L.J.Guo Y.S.Wang
State Key Laboratory of Multiphase Flow in Power Engineering, Xian Jiaotong University, Xian 710049 China
国际会议
西安
英文
945-950
2009-07-11（万方平台首次上网日期，不代表论文的发表时间）