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CFD analyses and correlation of pressure losses on the shell-side of concentric, helically-coiled tubes heat exchangers

机译:CFD分析和同心螺旋管式换热器壳侧压力损失的相关性

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摘要

This paper presents and discusses the results of Computational Fluid Dynamic (CFD) analyses for calculating the friction pressure losses of isothermal flows of liquid sodium, water, and helium gas, on the shell side of annular heat exchangers (HEXs) of concentric, helically coiled tubes. The analyses covering wide ranges of HEX geometrical parameters and flow Reynolds numbers, varied the number of HEX coils from 4 to 16, and examined the effect of refining the numerical mesh grids on the results. Expressing the friction factor in terms of an effective HEX porosity, a weighted average of the areal and volume porosities, collapses the friction factor results on a single curve for developing a continuous dimensionless correlation. The developed correlation, which agrees with the CFD results for 5.0 < Re < 10(7) to within +/- 6%, is given as:
机译:本文介绍并讨论了计算流体动力学(CFD)分析的结果,该计算结果用于计算同心螺旋盘旋环形换热器(HEX)壳侧液体钠,水和氦气等温流动的摩擦压力损失管。分析涵盖了广泛的HEX几何参数和流雷诺数,将HEX线圈的数量从4更改为16,并检查了细化数字网格对结果的影响。用有效HEX孔隙率(面积和体积孔隙率的加权平均值)表示摩擦系数,会使摩擦系数结果在一条曲线上破裂,从而形成连续的无量纲相关性。所开发的相关性与5.0

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  • 来源
    《Nuclear Engineering and Design》 |2016年第8期|531-546|共16页
  • 作者单位

    Univ New Mexico, Inst Space & Nucl Power Studies, Albuquerque, NM 87131 USA|Univ New Mexico, Dept Nucl Engn, Albuquerque, NM 87131 USA;

    Univ New Mexico, Inst Space & Nucl Power Studies, Albuquerque, NM 87131 USA|Univ New Mexico, Dept Nucl Engn, Albuquerque, NM 87131 USA|Univ New Mexico, Dept Mech Engn, Albuquerque, NM 87131 USA|Univ New Mexico, Dept Chem & Biol Engn, Albuquerque, NM 87131 USA;

  • 收录信息 美国《科学引文索引》(SCI);美国《工程索引》(EI);美国《生物学医学文摘》(MEDLINE);
  • 原文格式 PDF
  • 正文语种 eng
  • 中图分类
  • 关键词

  • 入库时间 2022-08-18 00:41:52

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