Study of moving contact line across hydro-philic and-phobic stripes

摘要：

　　The transient flow of the moving contact line across the intersection region of a pair of hydro-philic and-phobic stripes is studied.The procedure of replacing of gas by liquid in a capillary tube is simulated based on lattice Boltzmann method coupled with phase field model.During the transition, the evolution of the contact line velocity, dynamic contact angle and apparent contact angle are analyzed.It is found that the contact line undergoes an apparent.acceleration first and then a deceleration during the transition.The exceeded surface energy is transformed to kinetic energy, meanwhile part of which is dissipated by viscous force until the steady state is obtained.During the deceleration process, the viscous force is linearly proportional to the unbalanced Youngs force, and the visco-capillary regime is implied.

关键词： Moving contact line chemically heterogeneous surface phase field unbalanced Youngs force,lattice Boltzmann method

作者: Ming Liu Xiaopeng Chen Jianting Ren

作者单位: School of Mech., Civil Engg & Archit, Northwest.Polytech.Univ.,Xian, Shaanxi, P.R.China, 710129

会议类型: 国际会议

会议名称: The Second Conference of Global Chinese Scholars on Hydrodynamics(第二届全球华人水动学学术会议)

会议地点: 江苏 无锡

会议语种:英文

页码: 363-367

在线出版日期: 2016-11-11（万方平台首次上网日期，不代表论文的发表时间）