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Experimental Study on Heat Transfer in Ducts with Winglet Disturbances

机译:带有小翼扰动的管道传热的实验研究

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摘要

Heat transfer and friction characteristics for a new type of enhanced rectangular duct with winglets have been investigated experimentally. The results indicate that, in the range of Reynolds number from 5 x 10~3 to 4.7 x 10~4, heat transfer performance of the enhanced duct with winglets is superior to the enhanced duct with transverse disturbances. Comparisons under the identical pumping power condition reveal that the Nusselt number ratio Nu/Nu_o of the winglet duct to the smooth duct varies from 1.7 to 3.5, while this ratio is usually less than 1.5 for the enhanced ducts with transverse disturbances. For condition of same mass flow, the ratio Nu/Nu_o of the winglet duct to the smooth duct varies between 2.7 and 6.0.
机译:实验研究了一种新型的带小翼的增强矩形管道的传热和摩擦特性。结果表明,在雷诺数从5 x 10〜3到4.7 x 10〜4的范围内,带小翼的增强管的传热性能优于具有横向扰动的增强管。在相同泵浦功率条件下的比较显示,小翼导管与平滑导管的努塞尔特数比Nu / Nu_o在1.7到3.5之间变化,而对于具有横向扰动的增强型导管,该比值通常小于1.5。对于相同质量流量的条件,小翼导管与平滑导管的比值Nu / Nu_o在2.7至6.0之间变化。

著录项

  • 来源
    《Heat Transfer Engineering》 |2003年第2期|p.76-84|共9页
  • 作者

    Z.-X. YUAN; W.-Q. TAO; X. T. YAN;

  • 作者单位

    College of Environment and Energy Engineering, Beijing University of Technology, Beijing, 100022, China;

  • 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 工业用热工设备;
  • 关键词

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