化工学报 ›› 2023, Vol. 74 ›› Issue (4): 1474-1488.DOI: 10.11949/0438-1157.20221487

• 流体力学与传递现象 • 上一篇    下一篇

不同扰流结构冷板传热性能研究

李纪元1(), 李金旺1,2(), 周刘伟1   

  1. 1.南京航空航天大学航天学院,江苏 南京 211106
    2.南京航空航天大学江苏省航空动力系统重点实验室,江苏 南京 210016
  • 收稿日期:2022-11-15 修回日期:2023-03-09 出版日期:2023-04-05 发布日期:2023-06-02
  • 通讯作者: 李金旺
  • 作者简介:李纪元(1997—),男,硕士研究生,1073172970@qq.com
  • 基金资助:
    国家自然科学基金项目(11802125);江苏省航空动力系统重点实验室开放基金项目(CEPE2022003)

Heat transfer performance of cold plates with different turbulence structures

Jiyuan LI1(), Jinwang LI1,2(), Liuwei ZHOU1   

  1. 1.College of Astronautics, Nanjing University of Aeronautics and Astronautics, Nanjing 211106, Jiangsu, China
    2.Jiangsu Province Key Laboratory of Aerospace Power System, Nanjing University of Aeronautics and Astronautics, Nanjing 210016, Jiangsu, China
  • Received:2022-11-15 Revised:2023-03-09 Online:2023-04-05 Published:2023-06-02
  • Contact: Jinwang LI

摘要:

冷板是电子设备间接液冷系统的核心部件,在冷板内部流道增加扰流柱可以提高冷板的传热能力,在进行冷板扰流柱的设计时需兼顾降低热源温度与降低流体流过流道的压力损失两方面。结合热源温度、流体压降以及动力源耗能等因素,对内部流道含有菱柱、圆柱、水滴柱扰流结构的冷板的传热性能进行了研究。研究结果表明:含有水滴柱扰流结构的冷板的传热性能最好,且水滴扰流柱长宽比例在2.5∶1时冷板的传热性能最佳,通过缩小扰流柱尺寸、增加扰流柱数量及密度的方式可进一步提高冷板的传热性能。在本研究所实验测试的工况中,水滴柱扰流结构冷板相较于无扰流冷板,散热效果提高了60%左右。

关键词: 传热, 对流, 优化设计, 冷板, 扰流结构

Abstract:

Cold plate is the core component of indirect liquid cooling system of electronic equipment. Adding spoiler columns to the internal flow channel of cold plate can improve the heat transfer capacity of cold plate. In the design of cold plate spoiler column, it is necessary to consider both reducing the heat source temperature and reducing the pressure loss of fluid flowing through the flow passage. Combined with heat source temperature, fluid pressure drops, and power source energy consumption, the heat transfer performance of cold plate with inner flow channels containing rhombus, cylinder and droplet turbulence was studied. The results show that the heat transfer performance of the cold plate with the droplet column structure is the best, and the heat transfer performance of the cold plate is the best when the ratio of droplet column length to width is 2.5∶1. The heat transfer performance of the cold plate can be further improved by reducing the size of the droplet column and increasing the number and density of the droplet column. In the experiments of this study, the heat transfer performance of droplet turbulence cold plate improves about 60% compared with none turbulence cold plate.

Key words: heat transfer, convection, optimal design, cold plate, turbulence structure

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