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Oblique fluid flow and convective heat transfer across a tube bank under uniform wall heat flux boundary conditions

机译:在均匀壁热通量边界条件下,穿过管束的斜向流体流动和对流传热

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摘要

Fluid flow and convective heat transfer in an oblique-flow tube bank under uniform wall heat flux boundary conditions are investigated. Most previous studies on heat transfer across tube banks have concerned only on two extreme cases, i.e., pure parallel flow or pure cross flow. For more general and practical conditions in engineering, fluid flow is in an intermediate state and it often impinges the tubes with an oblique angle as a result from duct or heat mass exchanger structures. In this research, fluid flow and convective heat transfer is investigated for an oblique-flow tube bank. Uniform wall heat flux boundary conditions are considered. Numerical solution has been performed to obtain the shell-side fluid field and convective heat transfer rates with various impinging angles. Experimental work is conducted to validate the solution. The analysis reveals that the convective heat transfer rates and friction factors rise with an increase in the oblique angles from 0° to 90° to the tube axes. Correlations are proposed for the prediction of convective heat transfer coefficients and friction factors at different oblique angles with various geometrical parameters. The results can be extended to mass transfer in hollow fiber membrane bundles with Chilton-Colburn analogy.
机译:研究了均匀壁热通量边界条件下斜流管束中的流体流动和对流换热。以往关于跨管束传热的大多数研究仅涉及两种极端情况,即纯平行流或纯错流。对于工程中更一般和实际的条件,由于管道或热质交换器结构的缘故,流体流处于中间状态,并且通常以倾斜角度撞击管道。在这项研究中,对斜流管束的流体流动和对流换热进行了研究。考虑均匀的壁热通量边界条件。已经进行了数值解,以获得具有不同撞击角的壳侧流场和对流传热速率。进行实验工作以验证解决方案。分析表明,对流传热速率和摩擦系数随着相对于管轴的倾斜角从0°到90°的增加而增加。提出了用于预测不同斜角,不同几何参数的对流换热系数和摩擦系数的相关性。可以将结果扩展到通过Chilton-Colburn类比在中空纤维膜束中进行传质。

著录项

  • 来源
    《International Journal of Heat and Mass Transfer》 |2015年第12期|1259-1272|共14页
  • 作者单位

    Key Laboratory of Enhanced Heat Transfer and Energy Conservation of Education Ministry, School of Chemistry and Chemical Engineering, South China University of Technology, Guangzhou 510640, China;

    Key Laboratory of Enhanced Heat Transfer and Energy Conservation of Education Ministry, School of Chemistry and Chemical Engineering, South China University of Technology, Guangzhou 510640, China;

    Key Laboratory of Enhanced Heat Transfer and Energy Conservation of Education Ministry, School of Chemistry and Chemical Engineering, South China University of Technology, Guangzhou 510640, China;

    Key Laboratory of Enhanced Heat Transfer and Energy Conservation of Education Ministry, School of Chemistry and Chemical Engineering, South China University of Technology, Guangzhou 510640, China;

  • 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

    Tube bank; Oblique flow; Uniform wall heat flux; Convective heat transfer; Hollow fiber membrane bundle;

    机译:管束;斜流均匀的壁热通量;对流换热;中空纤维膜束;

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