新型射流微通道传热与流动特性研究

IF 6.4 2区 工程技术 Q1 MECHANICS
Lu Tang , Kunrong Huang , Jiahui Xing , Liping Xiang , Xingyou Li
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引用次数: 0

摘要

为了提高电子器件的性能和可靠性,促进学术界热管理技术的创新,本研究提出了一种新型的三射流翼鳍微通道结构。研究了翅片形状、翅片高度和翅片偏置距离对射流微通道流动特性、换热性能和整体性能的影响。通过数值模拟计算对比,发现翼型翼片的综合性能高于半翼型翼片;随着翅片高度和偏置距离的增大,换热系数和综合性能均呈现先增大后减小的趋势。当翅片高度为0.36 mm,偏移距离为0.04 mm时,热性能最佳,而当偏移距离为0时,底面温度均匀性最佳。与传统的单射流微通道相比,最终结构的换热系数和综合性能分别提高了55.9%和17.8%,总热阻降低了24%,最高温度降低了16.44 K。研究表明,增加多射流孔和翅片结构可以进一步提高射流微通道的传热性能、综合性能和底表面温度均匀性。
本文章由计算机程序翻译,如有差异,请以英文原文为准。
Research on heat transfer and flow characteristics of novel jet microchannels
To enhance the performance and reliability of electronic devices and foster innovation in thermal management technology within the academic community, this study proposes a novel triple-jet-winged fin microchannel structure. The effects of fin shape, fin height, and fin offset distance on the flow characteristics, heat transfer performance, and overall performance of the jet microchannel were investigated. Through comparing numerical simulation calculation, it is found that the comprehensive performance of airfoil fins is higher than that of semi-airfoil fins; As the fin height and offset distance increase, both the heat transfer coefficient and overall performance initially increase and then decrease. The optimal thermal performance is achieved when the fin height is 0.36 mm and the offset distance is 0.04 mm, while the best temperature uniformity on the bottom surface occurs when the offset distance is 0. Compared with the conventional single-jet microchannel, the final structure improves the heat transfer coefficient and overall performance by 55.9 % and 17.8 %, respectively, reduces the overall thermal resistance by 24 %, and lowers the maximum temperature by 16.44 K. The study concludes that increasing multi-jet holes and fin microstructures can further enhance the heat transfer performance, overall performance, and bottom surface temperature uniformity of jet microchannels.
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来源期刊
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.
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