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首页> 外文期刊>International Journal of Heat and Mass Transfer >Mass transfer from a bubble in a vertical pipe
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Mass transfer from a bubble in a vertical pipe

机译：从垂直管道中的气泡传质

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摘要

Mass transfer from single carbon dioxide bubbles in vertical pipes is measured using a stereoscopic image processing method to develop a mass transfer correlation applicable to a wide range of bubble diameters in standard pipe sizes. The diameters of pipes used are 12.5,18.2, and 25.0 mm and the bubble diameter ranges from 5 to 26 mm. The ratio, X, of the bubble diameter to the pipe diameter is varied from 0.2 to 1.8, which covers various bubble shapes such as spheroidal, wobbling, cap, and Taylor bubbles. Measured Sherwood numbers, Sh, strongly depend on bubble shape, i.e., Sh of Taylor bubbles differs from that of spheroidal and wobbling bubbles. The Sherwood numbers are correlated in terms of the Peclet number Pe and λ. The applicability of the proposed correlation to long-term bubble dissolution process is examined through comparisons between measured and predicted dissolution processes. The predictions are carried out by solving mass conservation equations not only for carbon dioxide but also for nitrogen and oxygen. Good agreements are obtained in the dissolution processes for various bubble sizes and the three pipe diameters.
机译：使用立体图像处理方法测量垂直管道中单个二氧化碳气泡的传质，以建立适用于标准管道尺寸的各种气泡直径的传质相关性。所用管道的直径为12.5、18.2和25.0毫米，气泡直径为5至26毫米。气泡直径与管道直径的比值X在0.2到1.8之间变化，它涵盖了各种气泡形状，例如球形，摆动，帽形和Taylor气泡。测得的舍伍德数Sh很大程度上取决于气泡的形状，即泰勒气泡的Sh与球状和摆动气泡的Sh不同。舍伍德数根据佩克利数Pe和λ相关。通过比较测得的溶出过程和预测的溶出过程，可以检验所提出的相关性对长期气泡溶出过程的适用性。通过求解不仅针对二氧化碳而且针对氮和氧的质量守恒方程来进行预测。在溶解过程中，对于各种气泡大小和三个管道直径都可以达成良好的协议。

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  • 作者

    Shogo Hosoda; Satoru Abe; Shigeo Hosokawa; Akio Tomiyama;

  • 作者单位

    Graduate School of Engineering, Kobe University, 1-1 Rokkodai, Nada, Kobe 657-8501, Japan;

    Graduate School of Engineering, Kobe University, 1-1 Rokkodai, Nada, Kobe 657-8501, Japan;

    Graduate School of Engineering, Kobe University, 1-1 Rokkodai, Nada, Kobe 657-8501, Japan;

    Graduate School of Engineering, Kobe University, 1-1 Rokkodai, Nada, Kobe 657-8501, Japan,Department of Mechanical Engineering, Graduate School of Engineering, Kobe University, 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

    Bubble; Mass transfer; Carbon dioxide; Dissolution;

    机译：气泡;传质;二氧化碳;溶出度;

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