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首页> 外文期刊>International Journal of Heat and Mass Transfer >Quenching experiments inside 6.0 mm tube at reduced gravity 2815Darcy-Benard-Marangoni convection in porous media
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Quenching experiments inside 6.0 mm tube at reduced gravity 2815Darcy-Benard-Marangoni convection in porous media

机译：在重力减小的情况下在6.0 mm管内进行淬火实验2815Darcy-Benard-Marangoni对流在多孔介质中

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摘要

This paper addresses the experimental results of quenching in tubes under microgravity conditions. The objective of the experiment is to obtain quantitative data and observations of the rewetting phenomenon under low gravity level and compare results with the equivalent terrestrial gravity ones. Test tube is made of Pyrex with 6.0 mm in diameter. Tests are performed with FC-72, a fluorinert liquid, flowing inside a vertical test section and upward liquid flow. Measurements included outer wall temperatures along the flow channel, inlet and outlet fluid temperatures, pressure and mass flow-rate. The results show a significant decrease in the quenching velocity at reduced gravity, while the rewetting temperature does not look to be affected by gravity level. The observed flow patterns are inverted annular flow and bubbly flow. The analyses are completed with a detailed high speed video images at normal gravity. These tests reveal the influence of mass flow-rate on the structure of vapour-liquid configuration during the inverted annular flow.
机译：本文介绍了在微重力条件下在管中淬火的实验结果。该实验的目的是获得低重力水平下的再润湿现象的定量数据和观测结果，并将结果与​​等效的地面重力结果进行比较。试管由直径为6.0毫米的Pyrex制成。测试使用的是FC-72（一种含氟液体），它在垂直测试区内流动，液体向上流动。测量包括沿流道的外壁温度，入口和出口流体温度，压力和质量流率。结果表明，在降低重力的情况下，淬火速度明显降低，而再润湿温度似乎不受重力水平的影响。观察到的流型是倒环形流和气泡流。分析使用正常重力下的详细高速视频图像完成。这些测试揭示了反向环形流动期间质量流量对蒸气-液体构型结构的影响。

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  • 来源
    《International Journal of Heat and Mass Transfer》 |2009年第12期|2807-2814|共8页
  • 作者

    G. P. Celata; M. Cumo; M. Gervasi; G. Zummo;

  • 作者单位

    ENEA, Institute for Thermal-Fluid Dynamics, Via Anguillarese 301, 00123 Santa Maria di Galeria, Rome, Italy;

    University of Rome La Sapienza, Corso Vittorio Emanuele II, 244 Rome, Italy;

    ENEA, Institute for Thermal-Fluid Dynamics, Via Anguillarese 301, 00123 Santa Maria di Galeria, Rome, Italy;

    ENEA, Institute for Thermal-Fluid Dynamics, Via Anguillarese 301, 00123 Santa Maria di Galeria, Rome, Italy;

  • 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
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