文章基本信息

标题：Phase-Field Model-Based Simulation of Motions of a Two-Phase Fluid on Solid Surface
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作者：Naoki TAKADA ; Junichi MATSUMOTO ; Sohei MATSUMOTO 等
期刊名称：Journal of Computational Science and Technology
电子版ISSN：1881-6894
出版年度：2013
卷号：7
期号：2
页码：322-337
DOI：10.1299/jcst.7.322
出版社：The Japan Society of Mechanical Engineers
摘要：A preliminary numerical simulation of the microscopic two-phase fluid motion on a solid surface was conducted using an interface-tracking method based on the phase-field model (PFM). Two variations of the lattice Boltzmann method (LBM) based on fictitious particle kinematics are proposed for solving diffuse-interface advection equations which were revised to improve volume-of-fluid conservation in the PFM simulations. The major findings are as follows: (1) the interface-tracking method accurately predicted the capillary force effect on dynamic two-phase fluid systems with a high density ratio between parallel plates; (2) the initial shape and volume of the two-phase fluid were retained adequately in linear translation with the use of the LBMs. These results proved that the PFM-based method and the LBM-based advection schemes can be used for simulating two-phase fluid motions in various macro- and microfluidics problems for devices, machineries and higher-throughput microdevice fabrication processes.
关键词：Computational Fluid Dynamics;Microfluidics;Multiphase Flow;Contact Line;Capillarity;Diffuse-Interface Model;Allen-Cahn Equation;Cahn-Hilliard Equation