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化工学报  2015 

壁面润湿性对微通道内二氧化碳-水两相流流动及传质性能的影响

DOI: 10.11949/j.issn.0438-1157.20151050, PP. 3405-3412

Keywords: 微通道,气-液两相流,弹状流,流体力学性质,传质,亲水,疏水

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Abstract:

在1mm×1mm矩形截面下微通道内,以二氧化碳-水为工作流体,研究壁面润湿性和气液表观流速对气-液两相流型和气液传质的影响,并研究了气、液表观流速对弹状流流体力学性质的影响。在亲水微通道中观测到了泡状流、泡状-弹状流、弹状流;在疏水微通道中观测到了非对称弹状流、拉长的非对称弹状流、分层流。实验表明亲水微通道中弹状流区域下气泡长度大体上随气相表观流速的增大而增大,随液相表观流速的增大而减小;液弹长度大体上随气相表观流速的增大而减小,随液相表观流速的增大先增大后减小;液侧体积传质系数kLa均随气、液相表观流速的增大而增大,随通道壁面润湿性的增强而增大。

References

[1]  Daniel G, Devanand P. Lab-on-a-chip: a revolution in biological and medical sciences [J]. Analytical Chemistry, 2000, 72(9): 330A-335A.
[2]  Ehrfeld W, Hessel V, L?we H. Microreactors: New Technology for Modern Chemistry[M]. Weinheim: WILEY-VCH, 2000: 33-36.
[3]  Chen Guangwen(陈光文), Yuan Quan(袁权). Micro-chemical technology [J]. Journal of Chemical Industry and Engineering (China) (化工学报), 2003, 54(4): 427-439.
[4]  Cao Bin(曹彬), Chen Guangwen(陈光文), Yuan Quan(袁权). Catalytic combustion of hydrogen /air in microchannel reactor [J]. Journal of Chemical Industry and Engineering(China)(化工学报), 2004, 55(1): 42-47.
[5]  Yue Jun(乐军), Chen Guangwen(陈光文), Yuan Quan(袁权), Luo Ling'ai(罗灵爱). Mass transfer in gas-liquid flow in microchannel [J]. Journal of Chemical Industry and Engineering(China)(化工学报), 2006, 57(6): 1296-1303.
[6]  Li S, Xu J, Wang Y, et al. Mesomixing scale controlling and its effect on micromixing performance [J]. Chemical Engineering Science, 2007, 62(13): 3620-3626.
[7]  Luo Guangsheng(骆广生), Xu Jianhong(徐建鸿), Li Shaowei(李少伟), Wang Yujun(王玉军), Wang Jiading(汪家鼎). Research and development of two-liquid phase flow in micro-structured devices [J]. Modern Chemical Industry(现代化工), 2006, 26(3): 19-23.
[8]  Wu W, Qian G, Zhou X G, et al. Peroxidization of methyl ethyl ketone in a microchannel reactor [J]. Chemical Engineering Science, 2007, 62(18): 5127-5132.
[9]  Tu Shantung(涂善东), Zhou Guoyan(周帼彦), Yu Xinhai(于新海). Microminiaturization of chemo-mechanical system and energy conservation [J]. Chemical Industry and Engineering Progress(化工进展), 2007, 26(2): 253-261.
[10]  Wegeng R S, Drost M K, Brenchley D L. Process intensification through miniaturization of chemical and thermal systems in the 21st century∥Proc.3rd Int Conf Microreaction Technology (IMRET3) [C]. Berlin: Springer, 2000: 2-13.
[11]  Service R F. Miniaturization puts chemical plant where you want them [J]. Science, 1998, 282: 400.
[12]  Jensen K F. Microreaction engineering-is small better? [J]. Chemical Engineering Science, 2001, 56(2): 293-303.
[13]  Chen Guangwen(陈光文), Yuan Quan(袁权). Micro-chemical technology [J]. Journal of Chemical Industry and Engineering (China)(化工学报), 2003, 54(4): 427-439.
[14]  Yue Jun(乐军), Chen Guangwen(陈光文), Yuan Quan(袁权). Principles and applications of micromixing technology [J]. Chemical Industry and Engineering Progress(化工进展), 2004, 23(12): 1271-1276.
[15]  de Mas N, Jackman R, Schmidt M, et al. Microchemical systems for direct fluorination of aromatics// Fifth International Conference on Microreaction Technology (IMRET5)[C]. Berlin: Springer-Verlag 2001,60-67.
[16]  Triplett K A, Ghiaassiaan S M, Abdel-Khalik S I, et al. Gas-liquid two-phase flow in microchannels(Ⅰ): Two-phase flow pattern [J]. International Journal of Multiphase Flow, 1999, 25(3): 377-394.
[17]  Lee C Y, Lee S Y. Influence of surface wettability on transition of two-phase flow pattern in round mini-channels [J]. International Journal of Multiphase Flow, 2008, 34(7): 706-711.
[18]  Zhao C X, Middelberg A P J. Two-phase microfluidic flows [J]. Chemical Engineering Science, 2011, 66(7):1394-1411.
[19]  Aoki N, Tanigawa S, Mae K. Design and operation of gas-liquid slug flow in miniaturized channels for rapid mass transfer [J]. Chemical Engineering Science, 2011, 66(24): 6536-6543.
[20]  van Baten J M, Krishna R. CFD simulations of mass transfer from Taylor bubbles rising in circular capillaries [J]. Chemical Engineering Science, 2004, 59(12): 2535-2545.
[21]  Choi C, Yu D I, Kim M. Surface wettability effect on flow pattern and pressure drop in adiabatic two-phase flows in rectangular microchannels with T-junction mixer [J]. Experimental Thermal and Fluid Science, 2011, 35(6): 1086-1096.
[22]  Wielhorski Y, Abdelwahed M A B, Bizet L, Bréard J. Wetting effect on bubble shapes formed in a cylindrical T-junction [J]. Chemical Engineering Science, 2012, 84: 100-106.

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