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[1]祁江羽,杨 杰,沙 勇*.液滴传质过程中Marangoni对流的引发[J].厦门大学学报(自然科学版),2019,58(04):499-504.[doi:10.6043/j.issn.0438-0479.201806001]
 QI Jiangyu,YANG Jie,SHA Yong*.Initiation of Marangoni convection in mass transfer of liquid drop[J].Journal of Xiamen University(Natural Science),2019,58(04):499-504.[doi:10.6043/j.issn.0438-0479.201806001]
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液滴传质过程中Marangoni对流的引发(PDF/HTML)
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《厦门大学学报(自然科学版)》[ISSN:0438-0479/CN:35-1070/N]

卷:
58卷
期数:
2019年04期
页码:
499-504
栏目:
研究论文
出版日期:
2019-07-28

文章信息/Info

Title:
Initiation of Marangoni convection in mass transfer of liquid drop
文章编号:
0438-0479(2019)04-0499-06
作者:
祁江羽杨 杰沙 勇*
厦门大学化学化工学院,福建 厦门 361005
Author(s):
QI JiangyuYANG JieSHA Yong*
College of Chemistry and Chemical Engineering,Xiamen University,Xiamen 361005,China
关键词:
Marangoni效应 计算流体力学 对流扩散 传质 数值模拟
Keywords:
Marangoni effect computational fluid dynamics convection diffusion mass transfer numerical simulation
分类号:
O 362
DOI:
10.6043/j.issn.0438-0479.201806001
文献标志码:
A
摘要:
对在丙酮-甲苯-水体系中由于传质而引发的Marangoni效应进行数值模拟,比较了二维和三维模型模拟计算结果中丙酮相对质量浓度和界面平均流动速度等参数在传质过程中的差异.结果表明两种模型计算结果差异较大,三维模型中Marangoni对流引发得更加充分,更贴近于实际情况.随后在三维模型中,分别考察了Gibbs吸附层与丙酮初始质量浓度对传质的影响,与文献中实验结果对比发现液-液界面中Gibbs吸附层的影响可以忽略,而丙酮初始质量浓度越高,Marangoni对流的引发时间越早,强度越大.
Abstract:
Marangoni effect induced by mass transfer process in the acetone-toluene-water droplet was numerically simulated.Relative mass concentration of acetone and average interface flow velocity of 2D and 3D models were compared.The results showed that the calculation of the two models was quite different,and the convection simulated by the 3D model was closer to the actual situation.Marangoni effect is a phenomenon that occurs in three dimensions,so it is not reasonable to simplify this 3D phenomenon to a 2D phenomenon.For the 3D droplet model,the effects of Gibbs adsorption layer and initial acetone concentration on mass transfer were tested.Compared with the experimental studies from literature,the results showed that the influence of Gibbs adsorption layer appearing in the liquid-liquid interface could be ignored.For liquid droplets with different initial acetone mass concentration,the higher initial mass concentration corresponded to the shorter critical time and the stronger intensity of the Marangoni convection.

参考文献/References:

[1] 余国琮,袁希钢.化工计算传质学导论[M].天津:天津大学出版社,2011:263-264.
[2] BUFFONE C,SEFIANE K.Investigation of thermocapillary convective patterns and their role in the enhancement of evaporation from pores[J].International Journal of Multiphase Flow,2004,30(9):1071-1091.
[3] 钟亦兴,卓亚运,王振风,等.正庚烷-丙酮混合物蒸发过程中的Marangoni对流[J].厦门大学学报(自然科学版),2017,56(3):364-369.
[4] GRAHN A.Two-dimensional numerical simulations of Marangoni-Bénard instabilities during liquid-liquid mass transfer in a vertical gap[J].Chemical Engineering Science,2006,61(11):3586-3592.
[5] PETERA J,WEATHERLEY L R.Modelling of mass transfer from falling droplets[J].Chemical Engineering Science,2001,56(16):4929-4947.
[6] MAO Z S,CHEN J.Numerical simulation of the Marangoni effect on mass transfer to single slowly moving drops in the liquid-liquid system[J].Chemical Engineering Science,2004,59(8/9):1815-1828.
[7] YUAN L,LEE P D.Dendritic solidification under natural and forced convection in binary alloys:2D versus 3D simulation[J].Modelling and Simulation in Materials Science and Engineering,2010,18(5):055008.
[8] 汪洋,陈杰,王智慧,等.多相传质过程中的Marangoni效应[J].化工学报,2013,64(1):124-132.
[9] 宋世谟,王正烈,李文斌.物理化学(下册)[M].北京:高等教育出版社,1993:202-203.
[10] BRIAN P L T.Effect of Gibbs adsorption on Marangoni instability[J].AIChE Journal,1971,17(4):765-772.
[11] KANG K H,CHOI C K,HWANG I G.Onset of solutal Marangoni convection in a suddenly desorbing liquid layer[J].AIChE Journal,2000,46(1):15-23.
[12] ADAMSON A W,GAST A P.Physical chemistry of surfaces [M].New York:John-Wiley and Sons,1967:82-83.
[13] MISEK T,BERGER R,SCHROTER J.Standard test systems for liquid extraction studies[J].European Federation of Chemical Engineering,1985,46(2):46-49.
[14] WEGENER M,GRUNIG J,STUBER J,et al.Transient rise velocity and mass transfer of a single drop with interfacial instabilities-experimental investigations[J].Chemical Engineering Science,2007,62(11):2967-2978.
[15] ZHENG H D,REN W F,CHEN K X,et al.Influence of Marangoni convection on mass transfer in the n-propyl acetate/acetic acid/water system[J].Chemical Engineering Science,2014,111:278-285.

备注/Memo

备注/Memo:
收稿日期:2018-06-01 录用日期:2018-08-07
*通信作者:ysha@xmu.edu.cn
更新日期/Last Update: 1900-01-01