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首页> 外文期刊>International Journal of Heat and Mass Transfer >Thermo-dynamic irreversibility induced by natural convection in square enclosure with inner cylinder. Part-Ⅱ: Effect of vertical position of inner cylinder
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Thermo-dynamic irreversibility induced by natural convection in square enclosure with inner cylinder. Part-Ⅱ: Effect of vertical position of inner cylinder

机译：具有内圆柱的方形罩中自然对流引起的热力学不可逆性。第二部分：内筒垂直位置的影响

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摘要

Two-dimensional numerical simulations were conducted to investigate the natural convection heat transfer induced by the temperature difference between cold walls of the square enclosure and a hot inner circular cylinder in the Prandtl number range of 10~(-2) ≤ Pr ≤ 10~2 and Rayleigh number range of 10~3 ≤ Ra ≤ 10~6. In this paper as a sequent research of Mun et al. (2015), the additional geometrical configuration of the system, which is the variation in the vertical position of the inner cylinder, was considered. The change in the structure of convection cells and corresponding heat transfer characteristics were analyzed, which are induced by the variation in the vertical position of the inner cylinder located in the enclosure. And the characteristics of the entropy generation due to heat transfer and fluid friction associated with the flow and thermal structures were addressed in this study.
机译：进行了二维数值模拟，以研究由方形外壳的冷壁与内部热圆柱体之间的温差在10〜（-2）≤Pr≤10〜2的普朗特数范围内引起的自然对流传热瑞利数范围为10〜3≤Ra≤10〜6。本文作为Mun等人的后续研究。 （2015年），考虑了系统的其他几何构型，即内筒垂直位置的变化。分析了对流单元的结构变化和相应的传热特性，这些变化是由位于外壳中的内圆柱的垂直位置的变化引起的。并研究了由于传热和与流动和热结构有关的流体摩擦而产生的熵的特征。

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  • 来源
    《International Journal of Heat and Mass Transfer》 |2016年第6期|1120-1139|共20页
  • 作者

    Jeong Hoon Doo; Gi Su Mun; Man Yeong Ha; Seon Yoo Seong;

  • 作者单位

    Rolls-Royce and Pusan National University Technology Centre in Thermal Management, Jang Jeon 2-Dong, Geum Jeong Gu, Busan 609-735, Republic of Korea;

    School of Mechanical Engineering, Pusan National University, Jang Jeon 2-Dong, Geum Jeong Gu, Busan 609-735, Republic of Korea;

    School of Mechanical Engineering, Pusan National University, Jang Jeon 2-Dong, Geum Jeong Gu, Busan 609-735, Republic of Korea;

    School of Mechanical Engineering, Pusan National University, Jang Jeon 2-Dong, Geum Jeong Gu, Busan 609-735, Republic of Korea;

  • 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

    Natural convection; Vertical position of inner cylinder; Entropy generation;

    机译：自然对流;内筒垂直位置;熵产生;

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