Pattern formation of drops in thermocapillary migration

被引:34
|
作者
Nas, S.
Muradoglu, M. [1 ]
Tryggvason, G.
机构
[1] Koc Univ, Dept Engn Mech, TR-34450 Istanbul, Turkey
[2] Worcester Polytech Inst, Dept Engn Mech, Worcester, MA 01609 USA
[3] Tech Univ Istanbul, Dept Aeronaut & Astronaut Engn, TR-34469 Istanbul, Turkey
基金
美国国家航空航天局;
关键词
thermocapillary migration; zero gravity; pattern formation; front-tracking method;
D O I
10.1016/j.ijheatmasstransfer.2005.12.009
中图分类号
O414.1 [热力学];
学科分类号
摘要
The behavior of a drop cloud in thermocapillary motion in zero gravity is examined for both mono-dispersed and poly-dispersed cases. Numerical simulations of the thermocapillary motion of two- and three-dimensional fully deformable light drops are presented. The Navier-Stokes equations coupled with the energy conservation equation are solved by a front-tracking/finite-difference method. The material properties of the drop fluid and the ambient fluid are different, and the interfacial tension depends on the temperature. At moderate Reynolds (Re) and Marangoni (Ma) numbers, the results show that drops form layers nearly perpendicular to the temperature gradient. (c) 2006 Elsevier Ltd. All rights reserved.
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页码:2265 / 2276
页数:12
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