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The extended Reynolds analogy for the Couette problem: Similarity parameters

机译:雷诺对库埃特问题的扩展类比:相似性参数

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摘要

We consider the extended Reynolds analogy for the Couette problem. That is, we study the relation between the shear stress and the energy flux transferred to the boundary surface at different velocities and temperatures. We use the direct simulation Monte Carlo (DSMC) method. We show that for all considered plates' velocities and temperatures the extended Reynolds analogy for a monatomic gas at any fixed Knudsen number depends on the plates' velocities and temperatures only via the Eckert number (up to statistical fluctuations). Additionally, we generalize an extended Reynolds analogy. For a monatomic gas in the transitional flow regime we show that the generalized Reynolds analogy up to statistical fluctuations depends only on Knudsen number for all considered Eckert numbers. For a gas at any Knudsen number as well as for liquid we show that the sum of the Reynolds analogies for the upper and lower plates in the Couette problem is exactly one.
机译:我们考虑将库纳问题扩展为雷诺兹类比。也就是说,我们研究了在不同速度和温度下,切应力与传递到边界表面的能量通量之间的关系。我们使用直接模拟蒙特卡洛(DSMC)方法。我们表明,对于所有考虑的板的速度和温度,在任何固定的克努森数下,单原子气体的扩展雷诺类比仅取决于板的速度和温度,而仅取决于Eckert数(直到统计波动)。另外,我们推广了一个扩展的雷诺类比。对于过渡流动状态下的单原子气体,我们表明直到所有统计波动,广义雷诺数类比仅取决于克努森数。对于任何克努森数的气体以及液体,我们都表明库埃特问题中上下板的雷诺类比之和恰好是一个。

著录项

  • 来源
  • 作者

    A.A. Abramov; A.V. Butkovskii;

  • 作者单位

    Central Aerohydrodynamic Institute (TsACI), 1, Zhukovsky str., 140180 Zhukovsky, Russia;

    Central Aerohydrodynamic Institute (TsACI), 1, Zhukovsky str., 140180 Zhukovsky, Russia;

  • 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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