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Constructal entropy generation rate minimization for asymmetric vascular networks in a disc-shaped body

机译：盘状体中不对称血管网络的构造熵产生率最小化

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摘要

Based on constructal theory, the vascular networks with asymmetric pairing in a disc-shaped body are optimized by taking the minimizations of the dimensionless entropy generation rate and dimensionless entropy generation ratio as optimization objectives, respectively. The results show that there exist optimal tube lengths and angles which lead to the minimum dimensionless entropy generation rate and dimensionless entropy generation ratio of the vascular networks with two and three levels of asymmetric pairing, respectively. The optimal constructs of the vascular networks based on asymmetric and symmetric designs are different. For the specified heat flow per unit length on each tube surface, when the number of outlets N = 24 and the dimensionless mass flow rate M_1~* = 10~(-2), the dimensionless entropy generation rate with two levels of pairing based on asymmetric design is decreased by 7.80% than that based on symmetric design; when the number of outlets N = 24 and the dimensionless pumping power W_2~* = 1, the dimensionless entropy generation rate with three levels of pairing based on asymmetric design is decreased by 6.78% than that based on symmetric design. Moreover, the performance improvements of the vascular networks with asymmetric design can also be found for the specified heat flux on each tube surface. The optimization results of the vascular networks based on minimum flow resistance are special cases of those based on minimum entropy generation rate in this paper.
机译：基于构造理论，以无量纲熵产生率和无量纲熵产生率的最小化为优化目标，优化了碟形体中不对称配对的血管网络。结果表明，存在最优的管长度和角度，分别导致具有两个和三个不对称配对的血管网络的最小无量纲熵生成率和无量纲熵生成率。基于非对称和对称设计的最佳血管网络结构不同。对于每个管表面上每单位长度的指定热流，当出口数量N = 24且无因次质量流率M_1〜* = 10〜（-2）时，基于两个配对的无因次熵产生率基于不对称设计比基于对称设计的设计减少了7.80％；当出口数量N = 24且无量纲泵浦功率W_2〜* = 1时，基于非对称设计的三级配对的无量纲熵产生率比基于对称设计的无量纲熵产生率降低6.78％。此外，对于每个管表面上的指定热通量，还可以发现具有不对称设计的血管网络的性能改进。基于最小流阻的血管网络优化结果是基于最小熵产生率的特殊情况。

著录项

  • 来源
    《International Journal of Heat and Mass Transfer》 |2015年第12期|1010-1017|共8页
  • 作者

    Huijun Feng; Lingen Chen; Zhihui Xie; Fengrui Sun;

  • 作者单位

    Institute of Thermal Science and Power Engineering, Naval University of Engineering, Wuhan 430033, PR China Military Key laboratory for Naval Ship Power Engineering, Naval University of Engineering, Wuhan 430033, PR China College of Power Engineering, Naval University of Engineering, Wuhan 430033, PR China;

    Institute of Thermal Science and Power Engineering, Naval University of Engineering, Wuhan 430033, PR China Military Key laboratory for Naval Ship Power Engineering, Naval University of Engineering, Wuhan 430033, PR China College of Power Engineering, Naval University of Engineering, Wuhan 430033, PR China;

    Institute of Thermal Science and Power Engineering, Naval University of Engineering, Wuhan 430033, PR China Military Key laboratory for Naval Ship Power Engineering, Naval University of Engineering, Wuhan 430033, PR China College of Power Engineering, Naval University of Engineering, Wuhan 430033, PR China;

    Institute of Thermal Science and Power Engineering, Naval University of Engineering, Wuhan 430033, PR China Military Key laboratory for Naval Ship Power Engineering, Naval University of Engineering, Wuhan 430033, PR China College of Power Engineering, Naval University of Engineering, Wuhan 430033, PR 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

    Constructal theory; Entropy generation rate minimization; Asymmetric vascular network; Disc-shaped body; Generalized thermodynamic optimization;

    机译：建构理论;熵产生率最小化;不对称的血管网络;盘状体;广义热力学优化;

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