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首页> 外文期刊>International Journal of Heat and Mass Transfer >Constructal design applied to the optimization of complex geometries: T-Y-shaped cavities with two additional lateral intrusions cooled by convection
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Constructal design applied to the optimization of complex geometries: T-Y-shaped cavities with two additional lateral intrusions cooled by convection

机译：适用于复杂几何形状优化的结构设计：T型孔，带有两个额外的横向对流冷却的对流冷却

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摘要

In this paper we consider the geometrical optimization of a complex cavity, namely a T-Y-shaped cavity with two additional lateral intrusions into a solid conducting wall. The assemblies of cavities were cooled by a steady convective stream while the solid generates heat uniformly and it is insulated on the external perimeter. Two sets of geometrical configurations, having different displacement of the lateral cavities, named "Design 1" and "Design 2", have been numerically investigated. The objective is to minimize the global thermal resistance between the solid and the complex assembly of cavities. The basic idea is to give the assembly more freedom to morph by increasing its degrees of freedom: it is expected, according to the constructal design, that an increase of the geometrical complexity will lead to an augmentation of the thermal performance. The analysis demonstrated that not all degrees of freedom play the same role in the performance of the complex cavity design: an improvement of approximately 45% has been observed after the optimization of the ratio H_3/L_3 while the optimization of the parameters H_1/L_1 and H_2IL_2 led to an additional gain of only 1%. Design 2's performance proofed to be superior to Design l's performance, because its lateral cavities are able to penetrate more efficiently into the solid body. Furthermore, Design 2's maximal excess temperature is approximately half of the corresponding dimensionless maximal excess temperature of the basic T-Y assembly, i.e., a cavity shaped as T and Y without lateral intrusions.
机译：在本文中，我们考虑了一个复杂空腔的几何优化，即一个T-Y形空腔，在固体导电壁上有两个额外的横向侵入。空腔组件通过稳定的对流进行冷却，而固体均匀地产生热量，并且在外部周边被绝缘。数值研究了两组横向腔位移不同的几何构型，分别称为“设计1”和“设计2”。目的是使固体和复杂的模腔之间的整体热阻最小。基本思想是通过增加组件的自由度来赋予组件更多的变形自由：根据结构设计，预计几何复杂性的增加将导致热性能的增强。分析表明，并非所有的自由度在复杂腔体设计的性能中都起着相同的作用：在优化比值H_3 / L_3之后，同时优化参数H_1 / L_1和H_3时，观察到的自由度提高了约45％。 H_2IL_2导致仅增加了1％。实践证明，设计2的性能优于设计1的性能，因为它的侧腔能够更有效地渗透到实体中。此外，设计2的最大过剩温度大约是基本T-Y组件相应的无量纲最大过剩温度的一半，即，形状为T和Y且无侧向侵入的型腔。

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  • 来源
    《International Journal of Heat and Mass Transfer》 |2012年第6期|p.1505-1512|共8页
  • 作者

    G. Lorenzini; F.L Garcia; E.D. dos Santos; C. Biserni; LAO. Rocha;

  • 作者单位

    Dipartimento di Ingegneria Industrial, Universita degli Sudi di Parma, Parco Area delle Sdenze 181/A, 43124 Parma, Italy;

    Program of Postgraduation in Computational Modeling, Universidade Federal do Rio Grande, Cx.P. 474, Rio Grande, RS 96201-900, Brazil;

    School of Engineering, Universidade Federal do Rio Grande, Cx.P. 474, Rio Grande, RS 96201-900, Brazil;

    Dipartimento di Ingegneria Energetica, Nucleare e del Controllo Ambientale, Universita degli Studi di Bologna, Viale Risorgimento 2. 40136 Bologna, Italy;

    Universidade Federal do Rio Grande do Sul, Depanamento de Engenharia Mecanica, Rua Sarmento Leite, 425, Porto Alegre, RS 90.050-170, Brazil;

  • 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 law; design in engineering; convective heat transfer;

    机译：构造法工程设计;对流换热;

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