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Microgravity gas-liquid flow through packed beds

机译:微重力气液流经填充床

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摘要

Analysis of possible physical mechanism involved in the process of transition of bubble-to-pulse flow regime in cocurrent gas-liquid flow through a packed bed in microgravity demonstrates that the transition can be described by the key dimensionless group Suratman number and the ratio of gas to liquid Reynolds numbers. This result establishes a physical basis to the existing empirical transition equation which is also based on the same dimensionless groups. Furthermore, the concepts of driving-to-resistance force ratio and pore-level bubble flow mechanism have been utilized to explore the basis of the existing modified friction factor correlation for two-phase flow through a packed bed under microgravity.
机译:分析微重力下并流气-液流通过填充床时气泡-脉冲流态转变过程中可能涉及的物理机制,表明该转变可以用关键的无量纲苏拉曼数和气体比率来描述液体雷诺数。该结果为现有的经验转换方程式建立了物理基础,该经验转换方程式也基于相同的无量纲组。此外,利用驱动阻力比和孔隙水平气泡流动机理的概念来探索在微重力作用下两相流经填充床的现有修正摩擦系数相关性的基础。

著录项

  • 来源
    《Acta astronautica》 |2011年第2期|p.39-45|共7页
  • 作者

    Nilava Sen;

  • 作者单位

    Chemical Engineering Department, Jadavpur University, Kolkata 700032, India;

  • 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

    packed bed; two-phase flow; microgravity;

    机译:床铺两相流微重力;

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