Numerical simulation and experimental investigation of gas-liquid two-phase flow in a complex microchannel

Chen Zheng; Mindi Zhang; Sicong Qiu; Hansheng Li; Tian Wang; Hanwei Wang

doi:10.1016/j.ces.2020.116198

Numerical simulation and experimental investigation of gas-liquid two-phase flow in a complex microchannel

Chen Zheng, Mindi Zhang^*, Sicong Qiu, Hansheng Li, Tian Wang, Hanwei Wang

^*Corresponding author for this work

Research output: Contribution to journal › Article › peer-review

14 Citations (Scopus)

Abstract

The present investigation evaluated a microchannel with variable cross sections and internal elements by experimental and numerical methods. The numerical and experimental phase interface of gas-liquid two-phase flow is captured through the Coupled Level-Set and Volume-Of-Fraction (CLSVOF) method and the canny edge detection method, respectively. The microchannel is analysed with different baffle angles (bending angle of the baffle, BA), and the optimal BA is chosen. The optimization goal is to increase the area of high-shear region and reduce the area of other region. Experiments involving the microchannel with optimal 67.5° BA are conducted. The experimental results confirm the microchannel mixing potency that the optimal structure of the high-shear region accelerates the fluid velocity, amplifies disturbances resulting from the merging of different gas phases and promotes the expansion of the turbulent domain.

Original language	English
Article number	116198
Journal	Chemical Engineering Science
Volume	230
DOIs	https://doi.org/10.1016/j.ces.2020.116198
Publication status	Published - 2 Feb 2021

Keywords

CLSVOF model
Canny edge detection
Microchannel
Mixing
Two-phase flow

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10.1016/j.ces.2020.116198

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title = "Numerical simulation and experimental investigation of gas-liquid two-phase flow in a complex microchannel",

abstract = "The present investigation evaluated a microchannel with variable cross sections and internal elements by experimental and numerical methods. The numerical and experimental phase interface of gas-liquid two-phase flow is captured through the Coupled Level-Set and Volume-Of-Fraction (CLSVOF) method and the canny edge detection method, respectively. The microchannel is analysed with different baffle angles (bending angle of the baffle, BA), and the optimal BA is chosen. The optimization goal is to increase the area of high-shear region and reduce the area of other region. Experiments involving the microchannel with optimal 67.5° BA are conducted. The experimental results confirm the microchannel mixing potency that the optimal structure of the high-shear region accelerates the fluid velocity, amplifies disturbances resulting from the merging of different gas phases and promotes the expansion of the turbulent domain.",

keywords = "CLSVOF model, Canny edge detection, Microchannel, Mixing, Two-phase flow",

author = "Chen Zheng and Mindi Zhang and Sicong Qiu and Hansheng Li and Tian Wang and Hanwei Wang",

note = "Publisher Copyright: {\textcopyright} 2020 Elsevier Ltd",

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doi = "10.1016/j.ces.2020.116198",

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TY - JOUR

T1 - Numerical simulation and experimental investigation of gas-liquid two-phase flow in a complex microchannel

AU - Zheng, Chen

AU - Zhang, Mindi

AU - Qiu, Sicong

AU - Li, Hansheng

AU - Wang, Tian

AU - Wang, Hanwei

PY - 2021/2/2

Y1 - 2021/2/2

N2 - The present investigation evaluated a microchannel with variable cross sections and internal elements by experimental and numerical methods. The numerical and experimental phase interface of gas-liquid two-phase flow is captured through the Coupled Level-Set and Volume-Of-Fraction (CLSVOF) method and the canny edge detection method, respectively. The microchannel is analysed with different baffle angles (bending angle of the baffle, BA), and the optimal BA is chosen. The optimization goal is to increase the area of high-shear region and reduce the area of other region. Experiments involving the microchannel with optimal 67.5° BA are conducted. The experimental results confirm the microchannel mixing potency that the optimal structure of the high-shear region accelerates the fluid velocity, amplifies disturbances resulting from the merging of different gas phases and promotes the expansion of the turbulent domain.

AB - The present investigation evaluated a microchannel with variable cross sections and internal elements by experimental and numerical methods. The numerical and experimental phase interface of gas-liquid two-phase flow is captured through the Coupled Level-Set and Volume-Of-Fraction (CLSVOF) method and the canny edge detection method, respectively. The microchannel is analysed with different baffle angles (bending angle of the baffle, BA), and the optimal BA is chosen. The optimization goal is to increase the area of high-shear region and reduce the area of other region. Experiments involving the microchannel with optimal 67.5° BA are conducted. The experimental results confirm the microchannel mixing potency that the optimal structure of the high-shear region accelerates the fluid velocity, amplifies disturbances resulting from the merging of different gas phases and promotes the expansion of the turbulent domain.

KW - CLSVOF model

KW - Canny edge detection

KW - Microchannel

KW - Mixing

KW - Two-phase flow

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U2 - 10.1016/j.ces.2020.116198

DO - 10.1016/j.ces.2020.116198

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VL - 230

JO - Chemical Engineering Science

JF - Chemical Engineering Science

M1 - 116198

ER -

Numerical simulation and experimental investigation of gas-liquid two-phase flow in a complex microchannel

Abstract

Keywords

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