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Chemcial Industry and Engineering 2016, Vol. 33 Issue (5) :86-95    DOI: 10.13353/j.issn.1004.9533.20141057
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Gradient Mesh Approach for Capturing Characteristics of Gas-Liquid Taylor Flow in Microchannels
Li Genhao, Yuan Xigang, Song Wenqi
State Key Laboratory of Chemical Engineering(Tianjin), School of Chemical Engineering and Technology, Tianjin University, Tianjin 300072, China

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Abstract 

This study is focused on a gradient mesh approach to capture the characteristics of Taylor flow.To balance the numerical accuracy and the computing efficiency, appropriate rules for the approach are newly proposed to determine an effective mesh arrangement.Series of two-dimensional simulations were performed with CFD software, Fluent, and the volume of fluid (VOF) model was applied to capture the gas-liquid two phase interface in T-junction microchannels with varying cross-sectional width (0.1, 0.2, 0.3, 0.4, 0.5, 0.8 and 1.0 mm).The hydrodynamic characteristics of Taylor flow obtained with the application of our rules for the mesh approach are shown to be in good agreement with existing correlation values and experimental data. New correlations of slug length were also proposed based on the simulations.The correlations are validated with the experimental slug lengths.

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Articles by authors
Li Genhao
Yuan Xigang
Song Wenqi
KeywordsTaylor flow;   microchannel;   numerical simulation;   mesh approach;   slug length     
Received 2014-08-20;
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Supported by the National Natural Science Foundation of China (20911130358).

Cite this article:   
Li Genhao, Yuan Xigang, Song Wenqi .Gradient Mesh Approach for Capturing Characteristics of Gas-Liquid Taylor Flow in Microchannels[J]  Chemcial Industry and Engineering, 2016,V33(5): 86-95
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