Motion and deformation of immiscible droplet in plane Poiseuille flow at low Reynolds number

作     者：潘定一 林雨青 张凌新 邵雪明 Ding-yi PAN;Yu-qing LIN;Ling-xin ZHANG;Xue-ming SHAO

作者机构：State Key Laboratory of Fluid Power and Mechatronic SystemsKey Laboratory of Soft Machines and Smart Devices of Zhejiang ProvinceDepartment of Engineering MechanicsZhejiang University 

出 版 物：《Journal of Hydrodynamics》 (水动力学研究与进展B辑（英文版）)

年 卷 期：2016年第28卷第4期

页      面：702-708页

核心收录：

学科分类：080704[工学-流体机械及工程] 08[工学] 080103[工学-流体力学] 0807[工学-动力工程及工程热物理] 080104[工学-工程力学] 081502[工学-水力学及河流动力学] 0815[工学-水利工程] 0805[工学-材料科学与工程（可授工学、理学学位）] 0802[工学-机械工程] 0701[理学-数学] 0801[工学-力学（可授工学、理学学位）] 0702[理学-物理学] 0812[工学-计算机科学与技术（可授工学、理学学位）] 

基　　金：supported by the National Natural Science Foun-dations of China(Grant Nos.11402230 11332009 and 11272284) 

主　　题：droplet migration migrate viscosity Reynolds locate capillary systematically twice positions 

摘      要：Droplet migration in plane Poiseuille flow is numerically investigated with a dissipative particle dynamics *** single droplet deformation in the channel flow is first studied to verify the current method and the physical *** effect of the viscosity ratio between the droplet and the solvent and the effect of the confinement are systematically *** droplet is in an off-centerline equilibrium position with a specific selection of the parameters.A large viscosity ratio makes the droplet locate in a near-wall equilibrium position,and a large capillary number makes the droplet migrate to the near-centerline region of the *** the droplet migration at the same Capillary number,there is a critical width of the channel,which is less than twice of the droplet diameter,and the droplet will only migrate to the channel centerline if the width is less than this critical value.