Experimental and numerical analysis on heat transfer performance of slug flow in rectangular microchannel

Dongren Liu; Xiang Ling; Hao Peng; Juan Li; Luanfang Duan

doi:10.1016/j.ijheatmasstransfer.2019.118963

Experimental and numerical analysis on heat transfer performance of slug flow in rectangular microchannel

Dongren Liu, Xiang Ling, Hao Peng, Juan Li, Luanfang Duan

机械与动力工程学院

科研成果: 期刊稿件 › 文章 › 同行评审

20 引用（Scopus）

摘要

In this work, experimental and numerical studies are carried out on gas-liquid two phase flow in rectangular microchannels. The effect of different parameters on heat transfer performance is studied. The results from experiment and simulations show that a higher wall heat flux will enhance the heat transfer performance but a higher inlet temperature difference ΔT between gas and liquid has a negative effect on Nusselt number. It should also be noticed that the Nusselt number will reach its maximum value when void fraction β (=Q_G/(Q_G + Q_L)) is in the range of 0.2–0.4, and then decreases gradually when β is from 0.4 to 0.9. Moreover, Capillary number Ca, superficial velocity U, liquid film thickness δ* also contribute to the heat transfer performance and behavior.

源语言	英语
文章编号	118963
期刊	International Journal of Heat and Mass Transfer
卷	147
DOI	https://doi.org/10.1016/j.ijheatmasstransfer.2019.118963
出版状态	已出版 - 2月 2020

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title = "Experimental and numerical analysis on heat transfer performance of slug flow in rectangular microchannel",

abstract = "In this work, experimental and numerical studies are carried out on gas-liquid two phase flow in rectangular microchannels. The effect of different parameters on heat transfer performance is studied. The results from experiment and simulations show that a higher wall heat flux will enhance the heat transfer performance but a higher inlet temperature difference ΔT between gas and liquid has a negative effect on Nusselt number. It should also be noticed that the Nusselt number will reach its maximum value when void fraction β (=QG/(QG + QL)) is in the range of 0.2–0.4, and then decreases gradually when β is from 0.4 to 0.9. Moreover, Capillary number Ca, superficial velocity U, liquid film thickness δ* also contribute to the heat transfer performance and behavior.",

keywords = "Heat transfer, Microchannel, Nusselt number, Slug flow, Taylor flow, Two phase",

author = "Dongren Liu and Xiang Ling and Hao Peng and Juan Li and Luanfang Duan",

note = "Publisher Copyright: {\textcopyright} 2019 Elsevier Ltd",

year = "2020",

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doi = "10.1016/j.ijheatmasstransfer.2019.118963",

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TY - JOUR

T1 - Experimental and numerical analysis on heat transfer performance of slug flow in rectangular microchannel

AU - Liu, Dongren

AU - Ling, Xiang

AU - Peng, Hao

AU - Li, Juan

AU - Duan, Luanfang

PY - 2020/2

Y1 - 2020/2

N2 - In this work, experimental and numerical studies are carried out on gas-liquid two phase flow in rectangular microchannels. The effect of different parameters on heat transfer performance is studied. The results from experiment and simulations show that a higher wall heat flux will enhance the heat transfer performance but a higher inlet temperature difference ΔT between gas and liquid has a negative effect on Nusselt number. It should also be noticed that the Nusselt number will reach its maximum value when void fraction β (=QG/(QG + QL)) is in the range of 0.2–0.4, and then decreases gradually when β is from 0.4 to 0.9. Moreover, Capillary number Ca, superficial velocity U, liquid film thickness δ* also contribute to the heat transfer performance and behavior.

AB - In this work, experimental and numerical studies are carried out on gas-liquid two phase flow in rectangular microchannels. The effect of different parameters on heat transfer performance is studied. The results from experiment and simulations show that a higher wall heat flux will enhance the heat transfer performance but a higher inlet temperature difference ΔT between gas and liquid has a negative effect on Nusselt number. It should also be noticed that the Nusselt number will reach its maximum value when void fraction β (=QG/(QG + QL)) is in the range of 0.2–0.4, and then decreases gradually when β is from 0.4 to 0.9. Moreover, Capillary number Ca, superficial velocity U, liquid film thickness δ* also contribute to the heat transfer performance and behavior.

KW - Heat transfer

KW - Microchannel

KW - Nusselt number

KW - Slug flow

KW - Taylor flow

KW - Two phase

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U2 - 10.1016/j.ijheatmasstransfer.2019.118963

DO - 10.1016/j.ijheatmasstransfer.2019.118963

M3 - 文章

AN - SCOPUS:85075364857

SN - 0017-9310

VL - 147

JO - International Journal of Heat and Mass Transfer

JF - International Journal of Heat and Mass Transfer

M1 - 118963

ER -

Experimental and numerical analysis on heat transfer performance of slug flow in rectangular microchannel

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