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首页> 外文期刊>Annals of nuclear energy >Analysis of natural circulation frictional resistance characteristics in rod bundle channel
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Analysis of natural circulation frictional resistance characteristics in rod bundle channel

机译：棒束通道自然循环摩擦阻力特性分析

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摘要

A considerable amount of research has gone into understanding the thermal-hydraulics characteristics of rod bundle channels which is of great importance for the nuclear industry. This paper will show that the development of the correlation of the frictional resistance coefficient in rod bundle channels under natural circulation conditions is well understood. This paper presents experimental studies of the single-phase resistance and obtains an improved correlation of the frictional resistance coefficient under natural circulation conditions based upon thermal-hydraulics characteristics which are well understood. It is also shown that this newly developed correlation closely predicts data.The experimental results show that the frictional resistance coefficient of a rod bundle channel under natural circulation is related to the physical properties of fluid and the size of the rod bundle channel. According to different flow regions, the relationship between the frictional resistance coefficient and Reynolds number is discussed separately, and the expressions of frictional resistance coefficient with Reynolds number in laminar flow region and transition region are obtained. After considering the influence of fluid properties on the frictional resistance coefficient, this paper introduces the kinematic viscosity correction factor to correct the frictional resistance coefficient. Finally, the complete expression of the frictional resistance coefficient was obtained. This newly developed predictive expression is in good agreement with experimental data in both the laminar and transition flow regions, with a relative error within +/- 5%. Thus we now have a predictor of the frictional resistance coefficient under natural circulation conditions based upon more complete thermal-hydraulic parameters in a static state. (C) 2018 Elsevier Ltd. All rights reserved.
机译：为了理解棒束通道的热工水力特性，已经进行了大量的研究，这对于核工业至关重要。本文将表明，在自然循环条件下杆束通道中摩擦阻力系数的相关性的发展已广为人知。本文介绍了单相电阻的实验研究，并基于众所周知的热工液压特性，获得了在自然循环条件下摩擦阻力系数的改进相关性。实验结果表明，在自然循环下杆束通道的摩擦阻力系数与流体的物理性质和杆束通道的大小有关。根据不同的流动区域，分别讨论了摩擦阻力系数与雷诺数之间的关系，得到了层流区域和过渡区域的摩擦系数与雷诺数的关系式。在考虑了流体特性对摩擦阻力系数的影响后，介绍了运动粘度修正系数来修正摩擦阻力系数。最后，获得了摩擦阻力系数的完整表达式。这种新开发的预测表达式与层流和过渡流区域的实验数据非常吻合，相对误差在+/- 5％之内。因此，我们现在可以基于更完整的静态热工参数来预测自然循环条件下的摩擦阻力系数。 （C）2018 Elsevier Ltd.保留所有权利。

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  • 来源
    《Annals of nuclear energy》 |2019年第5期|79-86|共8页
  • 作者

    Zhang Yinxing; Gao Puzhen; Kinnison W. Wayne; Ji Peng; Zhou Jian; Lin Yuqi;

  • 作者单位

    Harbin Engn Univ, Coll Nucl Sci & Technol, Harbin 150001, Heilongjiang, Peoples R China;

    Harbin Engn Univ, Coll Nucl Sci & Technol, Harbin 150001, Heilongjiang, Peoples R China;

    Texas A&M Univ, Nucl Power Inst, Texas Engn Expt Stn, 101 Gateway Blvd,Suite A, College Stn, TX 77845 USA;

    Harbin Engn Univ, Coll Nucl Sci & Technol, Harbin 150001, Heilongjiang, Peoples R China;

    Harbin Engn Univ, Coll Nucl Sci & Technol, Harbin 150001, Heilongjiang, Peoples R China;

    Harbin Engn Univ, Coll Nucl Sci & Technol, Harbin 150001, Heilongjiang, Peoples R China;

  • 收录信息
  • 原文格式 PDF
  • 正文语种 eng
  • 中图分类
  • 关键词

    Natural circulation; Rod bundle; Friction resistance coefficient;

    机译：自然循环;杆束;摩擦阻力系数;

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