| 水力学聚焦微通道中气液两相流动的数值模拟 |
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| 引用本文： | 吕建华,李品,高梦璠,殷明海.水力学聚焦微通道中气液两相流动的数值模拟[J].化工学报,2015,66(9):3398-3404. |
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| 作者姓名： | 吕建华 李品 高梦璠 殷明海 |
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| 作者单位： | 河北工业大学化工学院, 天津 300130 |
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| 基金项目： | 河北省自然科学基金项目(B201402251)。 |
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| 摘 要： | 采用计算流体力学方法,考察了水力学聚焦微通道中气、液两相的流动状态。气、液两相在微通道中呈膜状流动,成膜过程可划分为3个阶段,液相表面压力、黏性力和表面张力在该过程中不断变化。考察了两相入口压强对两相流量和膜厚的影响,模拟结果显示:保持两相压强比值不变,同时改变两相压强,影响不显著;改变两相压强比值,影响显著。
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| 关 键 词： | 计算流体力学 水力学聚焦 两相流 微通道 |
| 收稿时间： | 2015-06-10 |
| 修稿时间： | 2015-06-24 |
Numerical simulation of gas-liquid two-phase flow in hydrodynamically focused microchannels |
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| L&#,Jianhua,LI Pin,GAO Mengfan,YIN Minghai.Numerical simulation of gas-liquid two-phase flow in hydrodynamically focused microchannels[J].Journal of Chemical Industry and Engineering(China),2015,66(9):3398-3404. |
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| Authors: | L&# Jianhua LI Pin GAO Mengfan YIN Minghai |
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| Affiliation: | School of Chemical Engineering, Hebei University of Technology, Tianjin 300130, China |
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| Abstract: | The gas-liquid two-phase flow in the hydrodynamically focused microchannels was investigated via computational fluid dynamics (CFD) method. Film was formed in the micro-channels and the film formation process included three stages. Surface pressure, shear stress force and surface tension force were changed during the film formation process. The effects of two-phase pressure change on the two-phase flux and film thickness were investigated. The results of numerical simulation showed that the pressure changing had little influence with constant two-phase pressure ratio at 1, while changing the ratio showed the significant influence. |
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| Keywords: | CFD hydrodynamically focused two-phase flow microchannels |
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