对称分支并行微通道中气液两相流的均匀性规律

doi:10.11949/j.issn.0438-1157.20180576

化工学报 ›› 2018, Vol. 69 ›› Issue (11): 4640-4647.DOI: 10.11949/j.issn.0438-1157.20180576

对称分支并行微通道中气液两相流的均匀性规律

沈秋颖¹, Tahir Muhammad Faran¹, Cumbula Armando José¹, 付涛涛¹, 姜韶堃², 朱春英¹, 马友光¹

1. 化学工程联合国家重点实验室, 天津大学化工学院, 天津 300072;
2. 中国船舶重工集团公司第七一八研究所, 河北邯郸 056027

收稿日期:2018-05-29 修回日期:2018-07-04 出版日期:2018-11-05 发布日期:2018-11-05
通讯作者: 付涛涛
基金资助:
国家自然科学基金项目（91634105，91434204，21576186，21776200）。

Uniformity of gas-liquid two-phase flow in symmetrical parallelized branching microchannels

SHEN Qiuying¹, TAHIR Muhammad Faran¹, CUMBULA Armando José¹, FU Taotao¹, JIANG Shaokun², ZHU Chunying¹, MA Youguang¹

1. State Key Laboratory of Chemical Engineering, School of Chemical Engineering and Technology, Tianjin University, Tianjin 300072, China;
2. The 718 th Research Institute of China Shipbuilding Industry Corporation, Handan 056027, Hebei, China

Received:2018-05-29 Revised:2018-07-04 Online:2018-11-05 Published:2018-11-05
Supported by:
supported by the National Natural Science Foundation of China (91634105, 91434204, 21576186, 21776200).

摘要/Abstract

摘要：

采用高速摄像系统研究了对称分支形并行微通道内气液两相流及弹状气泡均匀性规律。实验中分别采用含0.3% SDS的甘油-水溶液与氮气作为液相和气相。观察到弹状流和泡状流两种流型，作出了由两相操作条件构成的流型图及流型转变线。结果表明，气泡非均匀性主要由两微通道内流体之间的相互作用、下游通道中流体动力学的反馈作用以及通道制造误差造成。随液相黏度增大，气泡均匀性变好；在高液相流量以及低气相压力下操作，气泡尺寸分布更易达到均匀。基于压力降守恒原理和微通道内气液两相流阻力模型，构建了两通道中气泡尺寸的预测模型。

关键词: 微通道, 并行放大, 多相流, 分布, 均匀性, 反馈

Abstract:

The uniformity of the gas-liquid two-phase flow and slug bubble in a symmetrical parallelized branching microchannel were studied by using a high-speed camera system. The glycerol-water solution containing 0.3% SDS and nitrogen were used as the liquid phase and the gas phase respectively. Two flow patterns of slug flow and bubble flow were observed, and a flow pattern and a flow pattern transition line composed of two-phase operation conditions were made. The results show that the non-uniformity of bubbles is caused by the hydrodynamics interaction between the two channels, the hydrodynamics feedback of the downstream channels, and the manufacturing differences of microchannels. With the increase of viscosity of the liquid phase, the uniformity of the bubbles becomes better. The bubble size distribution can be more uniform for high liquid flow rates and low gas pressures. The prediction models of bubble size in both microchannels were established based on the conservation principle of pressure drop and the gas-liquid two-phase flow resistance model.

Key words: microchannels, parallelization, multiphase flow, distributions, uniformity, feedback

中图分类号:

TQ021.4

沈秋颖, Tahir Muhammad Faran, Cumbula Armando José, 付涛涛, 姜韶堃, 朱春英, 马友光. 对称分支并行微通道中气液两相流的均匀性规律[J]. 化工学报, 2018, 69(11): 4640-4647.

SHEN Qiuying, TAHIR Muhammad Faran, CUMBULA Armando José, FU Taotao, JIANG Shaokun, ZHU Chunying, MA Youguang. Uniformity of gas-liquid two-phase flow in symmetrical parallelized branching microchannels[J]. CIESC Journal, 2018, 69(11): 4640-4647.

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对称分支并行微通道中气液两相流的均匀性规律

Uniformity of gas-liquid two-phase flow in symmetrical parallelized branching microchannels

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