CLC number:
On-line Access: 2024-08-27
Received: 2023-10-17
Revision Accepted: 2024-05-08
Crosschecked: 0000-00-00
Cited: 0
Clicked: 4950
Citations: Bibtex RefMan EndNote GB/T7714
Peng-fei ZHANG, Xiang-guo XU, Yong-jun HUA, Yu-qi HUANG. Effects of the outlet pressure on two-phase slug flow distribution uniformity in a multi-branch microchannel[J]. Journal of Zhejiang University Science A, 2022, 23(1): 68-82.
@article{title="Effects of the outlet pressure on two-phase slug flow distribution uniformity in a multi-branch microchannel",
author="Peng-fei ZHANG, Xiang-guo XU, Yong-jun HUA, Yu-qi HUANG",
journal="Journal of Zhejiang University Science A",
volume="23",
number="1",
pages="68-82",
year="2022",
publisher="Zhejiang University Press & Springer",
doi="10.1631/jzus.A2100135"
}
%0 Journal Article
%T Effects of the outlet pressure on two-phase slug flow distribution uniformity in a multi-branch microchannel
%A Peng-fei ZHANG
%A Xiang-guo XU
%A Yong-jun HUA
%A Yu-qi HUANG
%J Journal of Zhejiang University SCIENCE A
%V 23
%N 1
%P 68-82
%@ 1673-565X
%D 2022
%I Zhejiang University Press & Springer
%DOI 10.1631/jzus.A2100135
TY - JOUR
T1 - Effects of the outlet pressure on two-phase slug flow distribution uniformity in a multi-branch microchannel
A1 - Peng-fei ZHANG
A1 - Xiang-guo XU
A1 - Yong-jun HUA
A1 - Yu-qi HUANG
J0 - Journal of Zhejiang University Science A
VL - 23
IS - 1
SP - 68
EP - 82
%@ 1673-565X
Y1 - 2022
PB - Zhejiang University Press & Springer
ER -
DOI - 10.1631/jzus.A2100135
Abstract: The two-phase flow maldistribution phenomenon in microchannels with multi-parallel branches is inevitable in almost all common conditions, and not only affects the performance of the facility but also increases the risk of system instability. In order to better understand the distribution mechanism and to explore a potential strategy to improve uniformity, the pressure evolutions under different split modes in a microchannel with multi-parallel branches, were analyzed numerically. The results show that the fluctuations of transient pressure exhibit similar trends at various split modes, but the time-averaged pressure drops in the branches are very different. This may be related to the maldistribution of mass flow. Thus, the outlet pressures of the branches are numerically changed to explore the relationship between differential pressure and flow distribution. From this study, the flow distribution is seen to display a strong sensitivity to the branch differential pressure. By changing the pressure conditions, the gas flow of the middle branch can be effectively prevented from the main channel, and the flow type in this branch turns from gas-liquid to a single liquid phase. When the differential pressure of the first branch channel changes, the maldistribution phenomenon of the model can be mitigated to a certain extent. Based on this, by adjusting the differential pressures of the second branch, the maldistribution phenomenon can be further mitigated, and the normalized standard deviation (NSTD) decreases from 0.52 to approximately 0.26. The results and conclusions are useful in understanding the two-phase flow distribution mechanism and for seeking optimizing strategies.
[1]AsadolahiAN, GuptaR, FletcherDF, et al., 2011. CFD approaches for the simulation of hydrodynamics and heat transfer in Taylor flow. Chemical Engineering Science, 66(22):5575-5584.
[2]BaoWD, 2019. Investigation on Battery Thermal Management System (BTMS) with Refrigerant-based Direct Cooling. MS Thesis, Jilin University, Changchun, China(in Chinese).
[3]BordbarA, TaassobA, ZarnaghshA, et al., 2018. Slug flow in microchannels: numerical simulation and applications. Journal of Industrial and Engineering Chemistry, 62:26-39.
[4]ChenJF, WangSF, ChengS, 2012. Experimental investigation of two-phase distribution in parallel micro-T channels under adiabatic condition. Chemical Engineering Science, 84:706-717.
[5]DarioER, TadristL, PassosJC, 2013. Review on two-phase flow distribution in parallel channels with macro and micro hydraulic diameters: main results, analyses, trends. Applied Thermal Engineering, 59(1-2):316-335.
[6]DarioER, TadristL, OliveiraJLG, et al., 2015. Measuring maldistribution of two-phase flows in multi-parallel microchannels. Applied Thermal Engineering, 91:924-937.
[7]DongJX, ZhangXB, WangFM, et al., 2018. Numerical study of phase split characteristics of slug flow at a branching micro-T-junction. Asia-Pacific Journal of Chemical Engineering, 13(4):e2213.
[8]FerrariA, MagniniM, ThomeJR, 2018. Numerical analysis of slug flow boiling in square microchannels. International Journal of Heat and Mass Transfer, 123:928-944.
[9]GiannettiN, RedoMA, Sholahudin, et al., 2020. Prediction of two-phase flow distribution in microchannel heat exchangers using artificial neural network. International Journal of Refrigeration, 111:53-62.
[10]GuoRW, FuTT, ZhuCY, et al., 2020. Pressure drop model of gas-liquid flow with mass transfer in tree-typed microchannels. Chemical Engineering Journal, 397:125340.
[11]HeK, WangSF, HuangJZ, 2011. The effect of surface tension on phase distribution of two-phase flow in a micro-T-junction. Chemical Engineering Science, 66(17):3962-3968.
[12]HongSH, TangYL, WangSF, 2018. Investigation on critical heat flux of flow boiling in parallel microchannels with large aspect ratio: experimental and theoretical analysis. International Journal of Heat and Mass Transfer, 127:55-66.
[13]HongSH, JangDS, ParkS, et al., 2020. Thermal performance of direct two-phase refrigerant cooling for lithium-ion batteries in electric vehicles. Applied Thermal Engineering, 173:115213.
[14]KimNH, HanSP, 2008. Distribution of air-water annular flow in a header of a parallel flow heat exchanger. International Journal of Heat and Mass Transfer, 51(5-6):977-992.
[15]KimS, LeeSY, 2015. Split of two-phase plug flow with elongated bubbles at a microscale branching T-junction. Chemical Engineering Science, 134:119-128.
[16]KumarR, MithranN, MuniyandiV, 2017. Phase split in T-junction mini channel–a numerical study. Chemical Product and Process Modeling, 13(2):20170012.
[17]LeeWJ, JeongJH, 2019. Development of a numerical analysis model for a multi-port mini-channel heat exchanger considering a two-phase flow distribution in the header. Part I: numerical modeling. International Journal of Heat and Mass Transfer, 138:1264-1280.
[18]LiHW, LiJW, ZhouYL, et al., 2017. Phase split characteristics of slug and annular flow in a dividing micro-T-junction. Experimental Thermal and Fluid Science, 80:244-258.
[19]LiangN, ShaoSQ, XuHB, et al., 2010. Instability of refrigeration system–a review. Energy Conversion and Management, 51(11):2169-2178.
[20]LiuYC, WangSF, 2019. Distribution of gas-liquid two-phase slug flow in parallel micro-channels with different branch spacing. International Journal of Heat and Mass Transfer, 132:606-617.
[21]LiuYC, SunWC, WangSF, 2017a. Experimental investigation of two-phase slug flow distribution in horizontal multi-parallel micro-channels. Chemical Engineering Science, 158:267-276.
[22]LiuYC, SunWC, WuW, et al., 2017b. Gas-liquid two-phase flow distribution in parallel micro-channels with different header and channels’ orientations. International Journal of Heat and Mass Transfer, 112:767-778.
[23]MadananU, NayakR, ChatterjeeD, et al., 2018. Experimental investigation on two-phase flow maldistribution in parallel minichannels with U-type configuration. The Canadian Journal of Chemical Engineering, 96(8):1820-1828.
[24]MahviAJ, GarimellaS, 2019a. Modeling framework to predict two-phase flow distribution in heat exchanger headers. International Journal of Refrigeration, 104:65-75.
[25]MahviAJ, GarimellaS, 2019b. Two-phase flow distribution of saturated refrigerants in microchannel heat exchanger headers. International Journal of Refrigeration, 104:84-94.
[26]MarchittoA, FossaM, GuglielminiG, 2016. Phase split in parallel vertical channels in presence of a variable depth protrusion header. Experimental Thermal and Fluid Science, 74:257-264.
[27]MeinertH, SengerT, WiebkingN, et al., 2015. The plug-in hybrid technology of the new BMW X5 eDrive. MTZ Worldwide, 76(5):4-9.
[28]Ménétrier-DerembleL, TabelingP, 2006. Droplet breakup in microfluidic junctions of arbitrary angles. Physical Review E, 74(3):035303.
[29]NieL, WangMC, ZhaoY, 2020. Experimental study on direct refrigerant battery cooling system for electric vehicle. Journal of Refrigeration, 41(4):52-58 (in Chinese).
[30]RedoMA, JeongJ, GiannettiN, et al., 2019. Characterization of two-phase flow distribution in microchannel heat exchanger header for air-conditioning system. Experimental Thermal and Fluid Science, 106:183-193.
[31]RoenbyJ, BredmoseH, JasakH, 2016. A computational method for sharp interface advection. Royal Society Open Science, 3(11):160405.
[32]SinghR, BahgaSS, GuptaA, 2020. Electrohydrodynamic droplet formation in a T-junction microfluidic device. Journal of Fluid Mechanics, 905:A29.
[33]TonomuraO, TanakaS, NodaM, et al., 2004. CFD-based optimal design of manifold in plate-fin microdevices. Chemical Engineering Journal, 101(1-3):397-402.
[34]WangXD, ZhuCY, FuTT, et al., 2014. Critical lengths for the transition of bubble breakup in microfluidic T-junctions. Chemical Engineering Science, 111:244-254.
[35]YuW, XuLY, ChenSJ, et al., 2019. Numerical study on flow boiling in a tree-shaped microchannel. Fractals, 27(7):1950111.
[36]ZhouM, WangSF, ZhouY, 2017. Phase distribution of nitrogen–water two-phase flow in parallel micro channels. Heat and Mass Transfer, 53(4):1175-1182.
[37]ZouY, HrnjakPS, 2014. Effects of fluid properties on two-phase flow and refrigerant distribution in the vertical header of a reversible microchannel heat exchanger–comparing R245fa, R134a, R410A, and R32. Applied Thermal Engineering, 70(1):966-976.
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