Optimizing hydrothermal performance of manifold microchannels: A study on geometric dimensionless parameters

IF 6.4 2区工程技术 Q1 MECHANICS

International Communications in Heat and Mass Transfer Pub Date : 2025-04-22 DOI:10.1016/j.icheatmasstransfer.2025.108979

Chaowei Chen , Jingzhi Zhang , Xinyu Wang , Man Wang , Lin Guo , Gongming Xin

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Abstract

The manifold microchannel (MMC) is a promising cooling solution for electronics, with geometric parameters critically influencing its performance. This study focuses on three key dimensionless parameters: γ (ratio of combined inlet and outlet manifold lengths to microchannel length), β (ratio of inlet to outlet manifold lengths), and α (microchannel aspect ratio). The effects of these parameters on flow and heat transfer performance are investigated. Results reveal that γ and β significantly influence thermal-hydraulic performance and temperature distribution, with a strong interaction observed between them. Variations in these parameters cause the migration of low-temperature regions within the MMC, while pressure drop is minimized when β = 1. Using the PEC as a comprehensive metric, optimal parameter combinations are determined. The optimal β value is consistently 1.0, while the optimal γ ranges from 0.2 to 0.3, increasing with higher α values. Specifically, γ = 0.2 for α ≤ 8 and γ = 0.3 for α ≥ 10. These findings provide practical design guidelines for optimizing MMC configurations, enabling enhanced cooling efficiency and performance for electronics. The study bridges the gap in understanding the combined effects of geometric parameters, offering a robust framework for future MMC design and application.

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流形微通道热液性能优化：几何无因次参数的研究

流形微通道（MMC）是一种很有前途的电子散热解决方案，其几何参数对其性能有重要影响。该研究重点研究了三个关键的无量纲参数：γ（进出口歧管组合长度与微通道长度之比）、β（进出口歧管长度之比）和α（微通道宽高比）。研究了这些参数对流动和传热性能的影响。结果表明，γ和β显著影响热工性能和温度分布，两者之间存在很强的相互作用。这些参数的变化导致MMC内低温区域的迁移，而当β = 1时压降最小。利用PEC作为综合指标，确定了最优参数组合。β的最优值为1.0，γ的最优值为0.2 ~ 0.3，α值越高，γ值越高。具体来说,γ= 0.2为α≤8为α和γ= 0.3≥10。这些发现为优化MMC配置提供了实用的设计指南，从而提高了电子设备的冷却效率和性能。该研究弥补了对几何参数综合效应的理解差距，为未来MMC的设计和应用提供了一个强大的框架。

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来源期刊

International Communications in Heat and Mass Transfer 工程技术-力学

CiteScore

11.00

自引率

10.00%

发文量

648

审稿时长

32 days

期刊介绍： International Communications in Heat and Mass Transfer serves as a world forum for the rapid dissemination of new ideas, new measurement techniques, preliminary findings of ongoing investigations, discussions, and criticisms in the field of heat and mass transfer. Two types of manuscript will be considered for publication: communications (short reports of new work or discussions of work which has already been published) and summaries (abstracts of reports, theses or manuscripts which are too long for publication in full). Together with its companion publication, International Journal of Heat and Mass Transfer, with which it shares the same Board of Editors, this journal is read by research workers and engineers throughout the world.