基于格子玻尔兹曼方法的二维T型微通道内液滴生成  

Lattice Boltzmann Model for the Generation of Droplets in Two-Dimensional T-Junction Microchannel

作　　者：王昭君 杨帆[1,2] 郭雪岩[1,2] WANG Zhaojun;YANG Fan;GUO Xueyan(School of Energy and Power Engineering,University of Shanghai for Science and Technology,Shanghai 200093,China;Shanghai Key Laboratory of Multiphase Flow and Heat Transfer for Power Engineering,University of Shanghai for Science and Technology,Shanghai 200093,China)

机构地区：[1]上海理工大学能源与动力工程学院,上海200093 [2]上海理工大学上海市动力工程多相流与传热重点实验室,上海200093

出　　处：《上海理工大学学报》2018年第3期231-237,共7页Journal of University of Shanghai For Science and Technology

基　　金：上海市科委科研计划项目(13DZ2260900)

摘　　要：采用格子玻尔兹曼方法中的伪势模型,模拟了密度比近似相同且不互溶的两液相在T型微通道内产生不同形态的液滴,模拟结果与实验结果相吻合。分析了毛细数、两相流量比及两相的黏度比等因素对生成的液滴尺寸和间距的影响,模拟结果所得各种因素间的数值公式也与实验结果相差无几,连续相的毛细数和两相流量比对液滴的尺寸和间距的影响比较大,两相的黏度比对液滴的影响微小。By using the pseudo-potential model based on lattice Boltzmann method, for the flow of two liquid phases with similar densities, the formation of droplets of different shapes in the T-junction microchannel was simulated. The simulation results are consistent with the experimental results. The effects of the capillary number, flow ratio and viscosity ratio on the size and spacing of droplets were analyzed, and the numerical formulas summarized from the simulation results for considering the influence of various factors were also provided, whose results are also close to the experimental ones.The influences of the continuous phase capillary number and two-phase flow ratio are relatively great,while the viscosity ratio of two-phases has little influence on it.

关 键 词：两相流 T型微通道 液滴生成 伪势模型 格子玻尔兹曼 

分 类 号：O35[理学—流体力学]