Evolution of Free Surface in the Formation of Thermo-Solutocapillary Convection Within an Open Cavity
Evolution of Free Surface in the Formation of Thermo-Solutocapillary Convection Within an Open Cavity
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DOI：
10.1007/s12217-016-9492-y
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发表时间：
2016-03
影响因子：
1.8
通讯作者：
Xiaoming Zhou;Zhigang Liu;X. Huai
中科院分区：
文献类型：
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作者：
Xiaoming Zhou;Zhigang Liu;X. Huai
为了解热溶质毛细对流形成过程中自由表面的演化特征，采用水平集方法对矩形空腔内的热溶质毛细对流进行了二维数值模拟。相反的热毛细效应相当于solutocillary效应被认为是。计算结果表明，涡首先出现在右侧，然后逐渐向左侧移动，最终流场形成两个大小相当的涡。同时，自由面变形先增大后减小，最后保持一个较小的恒定变形。分析了Marangoni数、刘易斯数、毛细数、长径比和普朗特数对自由表面演化的影响。
In order to understand the characteristics of free surface evolution in thermo-solutocapillary convection formation, a set of two-dimensional numerical simulations is conducted using level set method for thermo-solutocapillary convection in a rectangular cavity. The opposing thermocapillary effects equivalent to solutocapillary effects is considered. The computational results show that, the vortices first appear at the right side and travel to the left side gradually, and the flow field forms two comparable size vortices at final state. Meanwhile, the free surface deformation first increases and then decreases, and finally keeps a small constant deformation. Moreover, the effects of Marangoni number, Lewis number, Capillary number, aspect ratio and Prandtl number on the free surface evolution are analyzed.