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Boiling of small droplets

机译：小水滴沸腾

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摘要

Analysis is reported of the boiling of small diameter suspended droplets, such as found in emulsions. A one-dimensional model considers both the energy and momentum equations, and effects of differences in fluid and thermodynamic properties between the droplet and the surrounding liquid are examined. Results are presented in the form of time varying bubble radius and temperature. The initial boiling of the droplet is insensitive to the surrounding liquid and droplet diameter, while the final evaporation rate is strongly affected by the properties of the surrounding liquid. After a droplet has completely evaporated, the vapor bubble expands and contracts via radial oscillations near the Minnaert frequency for isothermal bubbles. Thermal damping is observed but the model does not capture acoustic damping.
机译：报告了对小直径悬浮液滴沸腾的分析，例如乳液中的沸腾。一维模型同时考虑了能量方程和动量方程，并检查了液滴与周围液体之间流体和热力学性质差异的影响。结果以时变气泡半径和温度的形式表示。液滴的初始沸腾对周围的液体和液滴的直径不敏感，而最终的蒸发速率受周围液体的性质强烈影响。液滴完全蒸发后，蒸汽泡会通过等温气泡在Minnaert频率附近的径向振荡膨胀和收缩。观察到了热阻尼，但是模型没有捕获声学阻尼。

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  • 来源
    《International Journal of Heat and Mass Transfer》 |2010年第24期|p.5587-5595|共9页
  • 作者

    M.L. Roesle; F.A. Kulacki;

  • 作者单位

    Department of Mechanical Engineering, University of Minnesota, 111 Church St. S.E., Minneapolis, MN 55455, United States;

    rnDepartment of Mechanical Engineering, University of Minnesota, 111 Church St. S.E., Minneapolis, MN 55455, United States;

  • 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

    boiling; emulsion; droplet;

    机译：沸腾;乳液水滴;

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