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首页> 外文期刊>Heat Transfer Engineering >Flow and Heat Transfer Characteristics of Cylindrical Structures with Corner Radius Variation: Tandem, SIDE-BY-SIDE, and Flow-Induced Vibration
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Flow and Heat Transfer Characteristics of Cylindrical Structures with Corner Radius Variation: Tandem, SIDE-BY-SIDE, and Flow-Induced Vibration

机译：圆柱形结构的流量和传热特性，带拐角半径变化：串联，并排和流动诱导的振动

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摘要

This study investigates the effects of corner radius variation on thermohydraulic parameters around two equal isothermal square cylinders in tandem and side-by-side arrangements. In particular, a two-dimensional numerical study of unsteady laminar-forced convective heat transfer was conducted for a Reynolds number of 100. The Prandtl number was held constant at 0.71. The ratio of cylinder diameter over corner radius was varied from 0.0 to 0.5 with an increment of 0.1. The thermohydraulic parameters such as Strouhal number, drag coefficient, lift coefficient, and Nusselt number were discussed for various spacing ratios. In side-by-side arrangement, the Nusselt number increased for all corner radii with increasing distance between cylinders. However in tandem arrangement, as distance increased from the wake length of upstream circular cylinders, heat transfer was improved for both bodies. Moreover, the mean Nusselt number for the upstream cylinder approached a single cylinder value, while mean Nusselt number for the downstream cylinder was lower than that of a single cylinder. Furthermore, the flow induced vibration was coupled, which enhanced the heat transfer of a single square cylinder.
机译：本研究调查了串联和并排布置的两个相等等温方形气缸周围围绕热水液位参数的触角变化的影响。特别地，对雷诺数为100的雷诺数进行了非稳态层压对流传热的二维数值研究。普兰特数在0.71处保持恒定。拐流直径在拐角半径上的比率从0.0至0.5变化，增量为0.1。讨论了诸如Strouhal数，拖曳系数，提升系数和纽带数的热液柱参数，用于各种间距比。在并排的布置中，对于所有拐角半径的露天数增加，圆柱体之间的距离增加。然而，在串联布置中，随着距离从上游圆柱的唤醒长度增加，两体的热传递得到改善。此外，上游圆筒的平均喷射号接近单个气缸值，而下游圆筒的平均篮板数低于单个圆筒的纽带。此外，耦合流动诱导的振动，其增强了单个方形圆柱的热传递。

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  • 来源
    《Heat Transfer Engineering》 |2021年第5期|251-269|共19页
  • 作者

    Ehsan Adeeb; Chang Hyun Sohn;

  • 作者单位

    School of Mechanical Engineering Kyungpook National University Daegu South Korea School of Science University of Management and Technology Sialkot Pakistan;

    School of Mechanical Engineering Kyungpook National University Daegu South Korea;

  • 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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