高校化学工程学报2017，Vol.31Issue(2)：323-328,6.DOI:10.3969/j.issn.1003-9015.2017.00.014
入口角度及壁面性质对蛇形微通道内弹状流流动特性影响的格子Boltzmann模拟
Lattice Boltzmann Simulation of Gas-Liquid Flow in Serpentine Microchannel with Different Inlet Angles and Wall Properties
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
Lattice Boltzmann simulation was adopted to study Taylor flow in Y-junction convergence coil.Simulation of gas-liquid two-phase flow (with air and water as working media) was carried out in serpentine microchannels with rectangular cross section, and experimental studies were used to verify the simulation results. Effects of gas phase velocity, Y angle and wall properties on bubble length, and effects of Y type angle on flow pressure drop and flow resistance were simulated. Effects of roughness and wall surface wettability on flow resistance were also discussed. Effects of angle and wall surface property on flow were analyzed to evaluate the curved section of the microchannel. The results show that the bubble length reaches to maximum when the wall contact angle and Y type are 90 degrees. When the straight microchannel is composed of hydrophilic smooth wall and the curved section is hydrophobic with higher roughness, the Po number becomes smaller.关键词
蛇形微通道/弹状流/数值模拟/微流体学Key words
serpentine microhannel/Taylor flow/numerical simulation/microofluidics分类
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周云龙,常赫..入口角度及壁面性质对蛇形微通道内弹状流流动特性影响的格子Boltzmann模拟[J].高校化学工程学报,2017,31(2):323-328,6.
