Marangoni convection, evaporation and interface deformation in liquid films on heated substrates with non-uniform thermal conductivity

被引：35

作者：

Gambaryan-Roisman, Tatiana ^{[1
,2
]}

机构：

[1] Tech Univ Darmstadt, Chair Tech Thermodynam, D-64287 Darmstadt, Germany

[2] Tech Univ Darmstadt, Ctr Smart Interfaces, D-64287 Darmstadt, Germany

来源：

INTERNATIONAL JOURNAL OF HEAT AND MASS TRANSFER | 2010年 / 53卷 / 1-3期

关键词：

Thin films; Long-wave theory; Marangoni convection; Evaporation; Composite materials; STEADY THERMOCAPILLARY FLOWS; LAYERS;

D O I：

10.1016/j.ijheatmasstransfer.2009.09.017

中图分类号：

O414.1 [热力学];

学科分类号：

摘要：

Marangoni convection plays an important role in hydrodynamics of liquid films on heated or cooled substrates. in this paper a model describing Marangoni convection, interface dynamics and evaporation in liquid films on composite substrates or substrates of functionally graded materials is developed. Non-uniform thermal conductivity of the substrate causes non-uniformity of temperature distribution at the liquid-gas interface which leads to appearance of Marangoni stresses, convective vortices and film deformation. The film dynamics is described in the framework of long-wave theory. The substrate thermal conductivity non-uniformity has a pronounced effect on transport processes in the liquid film. (C) 2009 Elsevier Ltd. All rights reserved.

引用

页码：390 / 402

页数：13

共 21 条

[1] Marangoni convection and heat transfer in thin liquid films on heated walls with topography: Experiments and numerical study [J].