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首页> 外文期刊>Heat Transfer Engineering >Numerical-Theoretical Analysis of Heat Transfer, Pressure Drop, and Fouling in Internal Helically Ribbed Tubes of Different Geometries
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Numerical-Theoretical Analysis of Heat Transfer, Pressure Drop, and Fouling in Internal Helically Ribbed Tubes of Different Geometries

机译：不同几何形状的内部螺旋肋管内传热，压降和结垢的数值理论分析

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摘要

A numerical analysis of heat transfer and pressure drop for turbulent flow in a series of 15.54-mm inside diameter helically ribbed tubes has been performed. The ranges of geometric parameters were number of rib starts (10 to 40), helix angle (25 to 55 degrees), and rib height (0.3 to 0.6 mm). The effect of grid independence was extensively examined. The computational results match well with the experimental data to validate the accuracy of the numerical model. The effect of each main parameter, rib starts, helix angle, and rib height, on heat transfer and pressure drop is investigated. Considering fouling in practical situations, the ratio of pitch over rib height is an important parameter to select the tubes. It is advisable to select tubes with pitch over rib height ratio greater than 3.5, which have better heat transfer and lower fouling potential.
机译：对一系列直径为15.54-mm的螺旋肋管中的湍流传热和压降进行了数值分析。几何参数的范围是肋骨起点的数量（10至40），螺旋角（25至55度）和肋骨高度（0.3至0.6 mm）。电网独立性的影响得到了广泛研究。计算结果与实验数据吻合良好，验证了数值模型的准确性。研究了每个主要参数（肋起点，螺旋角和肋高度）对传热和压降的影响。考虑到实际情况下的结垢，螺距与肋高的比率是选择管子的重要参数。建议选择螺距与肋高比大于3.5的管子，它们具有更好的传热和较低的结垢可能性。

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  • 来源
    《Heat Transfer Engineering》 |2016年第4期|279-289|共11页
  • 作者

    WEI LI; PING FU; HONGXIA LI; GUANQIU LI; PETUR THORS;

  • 作者单位

    Department of Energy Engineering, Zhejiang University, Hangzhou, Zhejiang, China,Department of Energy Engineering, Zhejiang University, Hangzhou, 310027, China;

    Department of Energy Engineering, Zhejiang University, Hangzhou, Zhejiang, China;

    Department of Energy Engineering, Zhejiang University, Hangzhou, Zhejiang, China;

    Department of Energy Engineering, Zhejiang University, Hangzhou, Zhejiang, China,Masdar Institute of Science and Technology, Masar City, Abu Dhabi, United Arab Emirates;

    Wolverine Tube Inc., Decatur, Alabama, 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
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