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Determination of Henry's law constant and the diffusion and polytropic coefficients of air in aviation fuel

机译：航空燃料中亨利定律常数以及空气扩散系数和多变系数的确定

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摘要

The volume change of air microbubbles on surface nucleation sites was studied experimentally and compared with predictions. Measurements were used to determine the polytropic constant, the diffusion coefficient, and the Henry's law constant of air in distilled water, dodecane, and JP-8 aviation fuel. The liquids were exposed to sub-atmospheric pressures, but above their vapor pressures. In one type of experiment, bubble size reduction was recorded as the liquid's ambient pressure was increased from a low pressure to atmospheric pressure though a series of step increases. The results were used to determine the polytropic constant. In another type of experiment, bubble growth was monitored in time following a sudden reduction in the liquid's pressure from ambient. The Epstein-Plesset model of mass diffusion was coupled with a Lipschitzian optimization technique to determine the values of the diffusion coefficient and Henry's law constant.
机译：实验研究了表面成核部位空气微泡的体积变化，并将其与预测值进行了比较。测量用于确定蒸馏水，十二烷和JP-8航空燃料中空气的多方常数，扩散系数和亨利定律常数。液体暴露于低于大气压的压力下，但高于其蒸气压。在一种类型的实验中，虽然增加了一系列步骤，但随着液体的环境压力从低压增加到大气压，气泡尺寸减小被记录下来。结果用于确定多变常数。在另一种类型的实验中，在液体压力从周围环境突然降低之后，及时监测气泡的生长。 Epstein-Plesset质量扩散模型与Lipschitzian优化技术结合使用，确定扩散系数和亨利定律的值。

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  • 来源
    《Fuel》 |2011年第3期|p.1257-1263|共7页
  • 作者

    Patrick F. Dunn; Flint O. Thomas; James B. Leighton; Dayu Lv;

  • 作者单位

    Department of Aerospace and Mechanical Engineering, University of Notre Dame, Notre Dame, IN 46556, United States;

    Department of Aerospace and Mechanical Engineering, University of Notre Dame, Notre Dame, IN 46556, United States;

    Department of Aerospace and Mechanical Engineering, University of Notre Dame, Notre Dame, IN 46556, United States;

    Department of Aerospace and Mechanical Engineering, University of Notre Dame, Notre Dame, IN 46556, 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

    aviation fuel; polytropic constant; diffusion coefficient; henry's law constant; bubble;

    机译：航空燃料;多方常数;扩散系数;亨利定律;气泡;

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