Analysis of bubble transport process in porous media based on lattice Boltzmann method

被引：0
|
作者：
Wang, Hengbo [1 ]
Lan, Zhong [1 ]
Ma, Xuehu [1 ]
Song, Tianyi [2 ]
Dong, Xiaoqiang [2 ]
机构：
[1] School of Chemical Engineering, Dalian University of Technology, Dalian,Liaoning,116024, China
[2] Longhua Technology Group (Luoyang) Co., Ltd., Luoyang,Henan,471132, China
来源：
Huagong Jinzhan/Chemical Industry and Engineering Progress | 2020年 / 39卷 / 10期
关键词：
To improve the efficiency of capillary evaporation process in seawater desalination; an appropriate capillary pressure should be maintained for the porous media with a fast bubble passing process. A parametric model of the porous media structure was established to investigate the dynamic characteristics of the bubbles passing through the channel of porous media. The purpose was to find general rules that could make it easier for bubbles to pass through the porous medium layer by regulating the size and channel arrangement of the porous structure under a steady capillary pressure. The lattice Boltzmann pseudo-potential model was used to analyze the influencing factors; such as materials'porosity; skeleton's wettability; channel arrangement; bubbles' initial velocity in the horizontal direction; etc. The dependable variables including the transportation characteristics of bubble morphology; rising velocity and capillary pressure in the bubble rising process were discussed. This study obtained an operable porosity range and the criterion for the selection of wettability and channel arrangement of the porous structure. Furthermore; it revealed that bubbles with a certain horizontal velocity could detach from the porous media faster than those without horizontal velocity in the actual evaporation process. © 2020; Chemical Industry Press Co; Ltd. All right reserved;
D O I：
10.16085/j.issn.1000-6613.2020-0062
中图分类号：
学科分类号：
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页码：3926 / 3940
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