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首页> 外文期刊>International Journal of Heat and Mass Transfer >Gas-liquid two-phase flow distribution in parallel micro-channels with different header and channels' orientations
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Gas-liquid two-phase flow distribution in parallel micro-channels with different header and channels' orientations

机译：具有不同集管和通道方向的平行微通道中的气液两相流分布

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摘要

An experimental investigation was conducted to study the effect of header and channels orientations on the two-phase flow distribution in parallel micro-channels. The parallel micro-channels was composed of a header with hydraulic diameter of 0.667 mm and three parallel channels with hydraulic diameter of 0.500 mm, all with rectangle cross sections. Nitrogen and 0.03 wt% sodium dodecyl sulfate (SDS) solution were used as the test working fluids. The inlet superficial velocities of gas and liquid varied from 0.200 to 16.0 m/s and from 0.0246 to 0.650 m/s, respectively. The fluid dynamics of two-phase flow splitting in parallel micro-channels was captured by high speed recording technique and three flow patterns were observed at the inlet. It was found that the phase distribution characteristics of two-phase flow in parallel channels highly depended on the inlet flow patterns and the orientations of header and channels. For slug flow, a uniform phase distribution was achieved in horizontal header with vertically downward channels, whereas the distribution of slug-annular flow was improved in vertically upward header and horizontal channels. For annular flow, two-phase inhomogeneous distribution reached the highest when the header was vertically downward.
机译：进行了实验研究，以研究集管和通道方向对平行微通道中两相流分布的影响。平行微通道由水力直径为0.667 mm的集管和三个水力直径为0.500 mm的平行通道组成，所有通道均具有矩形横截面。氮气和0.03 wt％的十二烷基硫酸钠（SDS）溶液用作测试工作流体。气体和液体的入口表观速度分别为0.200至16.0 m / s和0.0246至0.650 m / s。通过高速记录技术捕获了平行微通道中两相流分流的流体动力学，并在入口处观察到三种流型。发现平行通道中的两相流的相分布特性高度取决于入口流型以及集管和通道的方向。对于团状流，在具有垂直向下的通道的水平集管中获得了均匀的相位分布，而在垂直向上的集管和水平通道中，团状-环形流的分布得到了改善。对于环形流，当集管垂直向下时，两相不均匀分布达到最高。

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  • 来源
  • 作者

    Yanchu Liu; Wanchun Sun; Wei Wu; Shuangfeng Wang;

  • 作者单位

    Key Lab of Heat Transfer Enhancement and Energy Conservation of Ministry of Education, School of Chemistry and Chemical Engineering, South China University of Technology, Guangzhou 510640, China;

    Key Lab of Heat Transfer Enhancement and Energy Conservation of Ministry of Education, School of Chemistry and Chemical Engineering, South China University of Technology, Guangzhou 510640, China;

    Key Lab of Heat Transfer Enhancement and Energy Conservation of Ministry of Education, School of Chemistry and Chemical Engineering, South China University of Technology, Guangzhou 510640, China;

    Key Lab of Heat Transfer Enhancement and Energy Conservation of Ministry of Education, School of Chemistry and Chemical Engineering, South China University of Technology, Guangzhou 510640, China;

  • 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

    Two-phase flow; Phase distribution; Parallel micro-channels; Header; Orientation; Visualization;

    机译：两相流;相分布;并行微通道;标头;取向;可视化;

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