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Gravity Scaling Parameter for Pool Boiling Heat Transfer

机译:池沸腾传热的重力缩放参数

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摘要

Although the effects of microgravity, earth gravity, and hypergravity (>1.5 g) on pool boiling heat flux have been studied previously, pool boiling heat flux data over a continuous range of gravity levels (0-1.7 g) was unavailable until recently. The current work uses the results of a variable gravity, subcooled pool boiling experiment to develop a gravity scaling parameter for n-perfluorohexane/FC-72 in the buoyancy-dominated boiling regime (L_hIL_c>2.1). The heat flux prediction was then validated using heat flux data at different subcoolings and dissolved gas concentrations. The scaling parameter can be used as a tool to predict boiling heat flux at any gravity level in the buoyancy dominated regime if the data under similar experimental conditions are available at any other gravity level.
机译:尽管先前已经研究了微重力,地球重力和超重力(> 1.5 g)对池沸腾热通量的影响,但直到最近才获得连续重力水平(0-1.7 g)范围内池沸腾热通量的数据。当前的工作使用可变重力过冷池沸腾实验的结果来开发浮力主导的沸腾状态下正全氟己烷/ FC-72的重力比例参数(L_hIL_c> 2.1)。然后使用不同过冷度和溶解气体浓度下的热通量数据验证热通量预测。如果在类似实验条件下的数据在任何其他重力水平下均可用,则缩放参数可以用作预测浮力主导状态下任何重力水平下沸腾热通量的工具。

著录项

  • 来源
    《Journal of Heat Transfer》 |2010年第9期|P.70-78|共9页
  • 作者单位

    Department of Mechanical Engineering,University of Maryland,College Park, MD 20742;

    rnDepartment of Mechanical Engineering,University of Maryland,College Park, MD 20742;

    rnNASA Glenn Research Center,21000 Brookpark Road,Cleveland, OH 44135;

  • 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

    scaling parameter; variable gravity; pool boiling; microgravity;

    机译:缩放参数;可变重力池沸腾;微重力;

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