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首页> 外文期刊>International Journal of Heat and Mass Transfer >Effect of interfacial heat exchange on thermocapillary flow in a cylindrical liquid bridge in microgravity
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Effect of interfacial heat exchange on thermocapillary flow in a cylindrical liquid bridge in microgravity

机译：界面热交换对微重力作用下圆柱液桥中毛细血管流动的影响

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摘要

The effect of interfacial heat exchange on thermocapillary flow in a cylindrical liquid bridge of 1 cst sil-icone oil (with Prandtl number 16.0) with aspect ratio 1.8 in microgravity, was investigated in an extended range of Biot number. With both constant and linearly distributed ambient temperature, the computed results predict that the marginal stability curve for the thermocapillary flow exhibits a roughly convex trend. In the range of small Biot number, however, a sharp local maximum exists with a special oscillation mode of azimuthal wave number m = 0, in contrast to the other cases with m = 1. In addition, the normalized "thermal" energy balance between the basic state and the critical perturbation of the thermocapillary flow was investigated. Finally, the effect of the interfacial heat exchange on the thermocapillary flow in a liquid bridge of low Prandtl number fluid in microgravity was investigated as a comparison.
机译：在Biot数的扩展范围内，研究了界面热交换对微重力纵横比为1.8的1 cst硅油（Prandtl号为16.0）的圆柱状液体桥中的热毛细管流动的影响。在恒定和线性分布的环境温度下，计算结果表明，热毛细流的边际稳定性曲线显示出大致凸出的趋势。然而，在比奥数小的范围内，与其他具有m = 1的情况相比，在特殊的振荡模式下，方位角波数m = 0时，存在一个尖锐的局部极大值。此外，之间的归一化“热”能平衡研究了热毛细流的基本状态和临界扰动。最后，比较了低重力下低普朗特数流体的液桥中界面热交换对热毛细管流动的影响。

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  • 来源
    《International Journal of Heat and Mass Transfer》 |2011年第10期|p.1698-1705|共8页
  • 作者

    Bo Xun; Kai Li; Wen-Rui Hu; Nobuyuki Imaishi;

  • 作者单位

    Key Laboratory of Microgravity (National Microgravity Laboratory), Institute of Mechanics, Chinese Academy of Sciences, Beijing 100190, China;

    Key Laboratory of Microgravity (National Microgravity Laboratory), Institute of Mechanics, Chinese Academy of Sciences, Beijing 100190, China;

    Key Laboratory of Microgravity (National Microgravity Laboratory), Institute of Mechanics, Chinese Academy of Sciences, Beijing 100190, China;

    Institute for Materials Chemistry and Engineering, Kyushu University, Kasuga 816-8580, Japan;

  • 收录信息 美国《科学引文索引》(SCI);美国《工程索引》(EI);
  • 原文格式 PDF
  • 正文语种 eng
  • 中图分类
  • 关键词

    liquid bridge; interfacial heat exchange; thermocapillary flow; critical marangoni number;

    机译：液桥;界面热交换;热毛细流;临界马朗哥尼数;

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