化工进展2016，Vol.35Issue(z1)：20-25,6.DOI:10.16085/j.issn.1000-6613.2016.s1.004
壁面润湿性对蛇形微通道内两相流流动特性影响的格子Boltzmann模拟
Lattice boltzmann simulation of gas-liquid flow in serpentine microchannel under different contact angle
周云龙 1常赫1
作者信息
- 1. 东北电力大学能源与动力工程学院，吉林 吉林 132012
- 折叠
摘要
Abstract
In order to study the gas-liquid two-phase flow of 90°Y-junction convergence coil,the method of lattice Boltzmann was adopted.The simulation of gas-liquid two-phase flow with air and water as working fluid was carried out in the serpentine microchannels of rectangular cross section.After passing the verification experiment,according to the calculation results,the flow patterns of different contact angles are plotted with the gas-liquid phase velocity as the coordinate and the effect of contact angle on slug flow was in-depth studied;Meanwhile,the difference of pressure drop and friction factor of two-phase flow under different contact angle in serpentine microchannels were compared;Influence factors of wall friction coefficient and shear stress were also discussed.It showed that hydrophobic wall which means the contact angle is greater than 90 degrees,the two-phase flow pressure drop, friction factor, wall friction coefficient and wall shear stress were lower than related parameters in serpentine microchannel with hydrophilic wall, which is beneficial to fluid flow.关键词
蛇形微通道/气液两相流/数值模拟/格子玻尔兹曼/流体动力学Key words
serpentine microchannels/gas-liquid flow/numerical simulation/lattice Boltzmann/hydrodynamics分类
能源与动力引用本文复制引用
周云龙,常赫..壁面润湿性对蛇形微通道内两相流流动特性影响的格子Boltzmann模拟[J].化工进展,2016,35(z1):20-25,6.
