Improvement of hotspot cooling in confinement space by corona discharge induced ionic wind
Improvement of hotspot cooling in confinement space by corona discharge induced ionic wind
复制标题
电晕放电诱导离子风改善密闭空间热点冷却
DOI：
10.1016/j.ijthermalsci.2021.107087
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发表时间：
2021
影响因子：
4.5
通讯作者：
Shu-Xiang Wang
中科院分区：
文献类型：
--
作者：
Tian-Hu Wang;Hang Zhao;Ming-Yang You;Wei-Mon Yan;Shu-Xiang Wang
热点冷却是电子设备热管理中的一个重要问题。随着器件尺寸的缩小，散热空间变得越来越有限，使得热点冷却受到挑战。然而，有效的解决方案是有限的。在这项研究中，通过离子风在受限空间的热点冷却的可行性是合理的。结果表明，离子风可以有效地抑制受限通道中的热点，这是传统的压力驱动流即使在大雷诺数下也无法实现的。二次涡揭示了潜在的物理现象。提出了单个热点和多个热点的冷却策略。二次电晕射流与整体气流之间存在着强烈的相互作用。耦合机制（冲击效应，屏障效应，入口效应）的解释，以设计一个合适的电极配置为单热点冷却。针对单个热点的设计策略不能直接用于多个热点，提出了“强化电极对”的设计概念。研究还发现，部分接地配置适合于单个热点，而整个接地更适合于多个热点。该研究为受限空间内电子器件的热点冷却提供了一种可能的方法。
Hotspot cooling is a significant problem in the thermal management of electronic devices. With device dimension scaling down, the dissipation space becomes more and more confined making hotspot cooling challenged. However, effective solutions are limited. In this study, the feasibility of hotspot cooling by ionic wind in confined space is justified. It is demonstrated that the hotspot in a confined channel can be suppressed effectively by ionic wind, which cannot be achieved by conventional pressure-driven flow even with a large Reynolds number. The underlying physics is revealed by the secondary vortices. The cooling strategies for a single hotspot and multiple hotspots are proposed. There exists strong interplay between the secondary corona jet and the bulk flow. Coupled mechanisms (impingement effect, barrier effect, and entrance effect) are explained to design a suitable electrode configuration for single hotspot cooling. However, the design strategy for single hotspot cannot be directly used for multiple hotspots and a new design concept of “intensify electrode pair” is proposed. It is also found that partial ground configuration is suitable for a single hotspot, while entire ground is better for multiple hotspots. This work provides a potential means for hotspot cooling of electronic devices in confined space.
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影响因子：
2.2
作者：
D. Shin;S. Baek;H. Ko
通讯作者：
D. Shin;S. Baek;H. Ko
影响因子：
1.8
作者：
Kim, C.;Park, D.;Hwang, J.
通讯作者：
Hwang, J.
DOI：
10.1016/0016-0032(51)91075-7
发表时间：
2007
期刊：
--
影响因子：
--
作者：
P. Lettieri;T. Elson
通讯作者：
P. Lettieri;T. Elson
多线筒负电晕放电边界层调节控制
影响因子：
6.4
作者：
Wang Wei;Yang Lanjun;Wu Kai;Lin Cen;Huo Peng;Liu Shuai;Huang Dong;Lin Mei
通讯作者：
Lin Mei
影响因子：
6.4
作者：
D. Shin;D. Sohn;H. Ko
通讯作者：
D. Shin;D. Sohn;H. Ko