|本期目录/Table of Contents|

[1]张锋,张志炳,王志祥.Marangoni效应对降膜过程液体分布的影响[J].武汉工程大学学报,2008,(04):1-04.
　ZHANG Feng,ZHANG Zhi bing,WANG Zhi xiang.Influence of Marangoni effect on the liquid distributionof falling liquid films[J].Journal of Wuhan Institute of Technology,2008,(04):1-04.
点击复制

Marangoni效应对降膜过程液体分布的影响(/HTML)
分享到：

《武汉工程大学学报》[ISSN:1674-2869/CN:42-1779/TQ]

卷:
期数:
2008年04期
页码:
1-04
栏目:
化学与化学工程
出版日期:
2008-04-30

文章信息/Info

Title:
Influence of Marangoni effect on the liquid distribution
of falling liquid films
文章编号:
16742869(2008)04000104
作者:
张锋1; 2; 张志炳2; 王志祥1
1.中国药科大学药学院,江苏 南京210009；2.南京大学化工系,江苏 南京 210093
Author(s):
ZHANG Feng 1; 2;  ZHANG Zhibing 2;  WANG1 Zhixiang
1.Department of Pharmaceutical Engineering, China Pharmaceutical University, Nanjing 210009, China;
2.Department of Chemical Engineering, Nanjing University, Nanjing 210093, China
关键词:
降膜; 液体分布; 红外热成像; 温度梯度; Marangoni效应
Keywords:
falling liquid film;  liquid distribution;  infrared imaging technique;  temperature gradient;  Marangoni effect
分类号:
TQ028.32
DOI:
-
文献标志码:
A
摘要:
采用红外热成像技术测量液膜表面温度分布和流动区域，确定液膜在固体壁面上的润湿面积，以分析液体在设备内的分布性能以及液膜表面的温度梯度，进而明确温度分布与液体分布之间的相互影响关系.实验发现液膜径向温度梯度引起的表面张力梯度，造成径向Marangoni流，影响液膜在固体壁面上的分布.在Marangoni效应的作用下，加热（冷却）能够减小（扩大）液体在固体壁面上的润湿面积.正体系（冷却降膜）中，流量能够促进温度梯度造成的Marangoni效应，而在负体系（受热降膜）中，较大的流量抑制了Marangoni效应.
Abstract:
By using infrared imaging technique, the flow characteristics and temperature distribution of the falling liquid film could be obtained．This makes it very convenient to determine the relationship between the flow and temperature distributions. It is found that heating (cooling) makes the film contracted (extended), increasing (decreasing) the area of the film, due to the existence of lateral temperature gradient and socaused Marangoni effect. For the positive system (cooled films), liquid flow reinforces Marangoni effect is induced by temperature gradient, while larger liquid flow retards Marangoni effect in the negative system (heated films).

参考文献/References:

［1］Frederic K W, Dukler A E Insights into the hydrodynamics of falling wavy films［J］. AIChE Journal, 1989，35(2): 187195.
［2］Chu K J, Dulker A E. Statistical characteristics of thin, wavy films: Part II. study of the substrate and its wave structure ［J］. AIChE Journal, 1974, 20(4): 695706.
［3］AlSibai F, Leefken A, Renz U. Local and instantaneous distribution of heat transfer rates through wavy films［J］. International Journal of Thermal Science, 2002, 41, 658663.
［4］Kabov O A, Scheid B,Sharina I A, et al. Heat transfer and rivulet structures formation in a falling thin liquid film locally heated ［J］. Int J Therm Sci, 2002, 41: 664672.
［5］Zhang F, Zhang Z B, Geng J. Study on shrinkage characteristics of heated falling liquid films［J］. AIChE Journal, 2005, 51(11): 28992907.
［6］Ehrhard P, Davis S H, Nonisothermal spreading of liquid drops on horizontal plates［J］. J Fluid Mech，1991, 229: 365388.
［7］Zuiderweg F J， Harmens A. The influence of surface phenomena on the performance of distillation columns［J］. Chem Eng Sci，1958, 9(2/3): 89103.

相似文献/References:

备注/Memo

备注/Memo:
收稿日期：20080521
基金项目：国家自然科学基金（NO.20576050）
作者简介：张锋(1979)，男，宁夏隆德人,讲师，博士.
研究方向:制药分离工程研究.
更新日期/Last Update: