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首页> 外文期刊>International Journal of Heat and Mass Transfer >Parametric study on heat transfer and pressure drop of twisted oval tube bundle with in line layout
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Parametric study on heat transfer and pressure drop of twisted oval tube bundle with in line layout

机译：在线排列的椭圆形管束传热与压降的参数研究

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摘要

A numerical research is conducted to investigate air side heat transfer and pressure drop performance of twisted oval tube bundles with in line layout in cross flow. The effects of five geometric parameters (the ratio of outer major axis to outer minor axis (A/B), twist pitch length (S), transverse tube pitch (S-t), longitudinal tube pitch (S-l) and number of longitudinal tube rows (Z)) on the air side heat transfer and pressure drop performance are examined in the range of Reynolds number (Re) from 500 to 23,000. The velocity field and temperature field are repeated periodically every S/2 along the length of the twisted oval tube, which reveals that the twisted oval tube is a streamlined tube that is independent of the angle of attack. Twisted oval tube bundles perform excellent heat transfer performance compared with other tube bundles (circular tube bundle with the same tube layout as the twisted oval tube bundle, elliptic tube bundle with staggered manner, spirally corrugated tube bundle with in line layout) in cross flow. And the staggered tube layout is beneficial to enhance heat transfer performance compared with in line tube layout. Correlations for Nusselt number (Nu) and Euler number (Eu) from this paper are presented. (C) 2019 Published by Elsevier Ltd.
机译：进行了数值研究，以研究横流成一直线布置的椭圆形扭曲管束的空气侧传热和压降性能。五个几何参数的影响（外长轴与外短轴之比（A / B），扭曲螺距长度（S），横向管螺距（St），纵向管螺距（S1）和纵向管排数（ Z））在空气侧的传热和压降性能在500至23,000的雷诺数（Re）范围内进行检查。沿扭曲椭圆管的长度每S / 2周期性重复速度场和温度场，这表明扭曲椭圆管是流线型管，与攻角无关。与其他管束（与扭曲的椭圆管束具有相同管布局的圆形管束，交错排列的椭圆形管束，成一直线的螺旋波纹管束）相比，扭曲的椭圆形管束具有出色的传热性能。与管线式布置相比，交错的管布置有利于增强传热性能。提出了本文的努塞尔数（Nu）和欧拉数（Eu）的相关性。 （C）2019由Elsevier Ltd.发布

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  • 来源
  • 作者

    Li Xiuzhen; Zhu Dongsheng; Yin Yingde; Tu Aimin; Liu Shijie;

  • 作者单位

    Chinese Acad Sci, Guangzhou Inst Energy Convers, Guangzhou 510640, Guangdong, Peoples R China|CAS Key Lab Renewable Energy, Guangzhou 510640, Guangdong, Peoples R China|Guangdong Prov Key Lab New & Renewable Energy Res, Guangzhou 510640, Guangdong, Peoples R China|Univ Chinese Acad Sci, Beijing 100049, Peoples R China;

    Chinese Acad Sci, Guangzhou Inst Energy Convers, Guangzhou 510640, Guangdong, Peoples R China|CAS Key Lab Renewable Energy, Guangzhou 510640, Guangdong, Peoples R China|Guangdong Prov Key Lab New & Renewable Energy Res, Guangzhou 510640, Guangdong, Peoples R China;

    Chinese Acad Sci, Guangzhou Inst Energy Convers, Guangzhou 510640, Guangdong, Peoples R China|CAS Key Lab Renewable Energy, Guangzhou 510640, Guangdong, Peoples R China|Guangdong Prov Key Lab New & Renewable Energy Res, Guangzhou 510640, Guangdong, Peoples R China;

    Chinese Acad Sci, Guangzhou Inst Energy Convers, Guangzhou 510640, Guangdong, Peoples R China|CAS Key Lab Renewable Energy, Guangzhou 510640, Guangdong, Peoples R China|Guangdong Prov Key Lab New & Renewable Energy Res, Guangzhou 510640, Guangdong, Peoples R China;

    Chinese Acad Sci, Guangzhou Inst Energy Convers, Guangzhou 510640, Guangdong, Peoples R China|CAS Key Lab Renewable Energy, Guangzhou 510640, Guangdong, Peoples R China|Guangdong Prov Key Lab New & Renewable Energy Res, Guangzhou 510640, Guangdong, Peoples R 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

    Twisted oval tube; Heat transfer; Nusselt number; Cross flow;

    机译：椭圆形扭曲管;传热;努塞尔数;错流;

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