Heat transfer enhancement for outlet part of the bionic microchannel by various concise rib configurations

被引：2

作者：

Zhou, Jiandong ^{[1
]}

机构：

[1] Xi An Jiao Tong Univ, Sch Aerosp, State Key Lab Strength & Vibrat Mech Struct, Xian 710049, Shaanxi, Peoples R China

来源：

NUMERICAL HEAT TRANSFER PART A-APPLICATIONS | 2024年 / 85卷 / 21期

基金：

中国国家自然科学基金;

关键词：

Comprehensive performance; concise rib configurations; heat transfer; microchannel; PRESSURE-DROP; FLOW; CHANNEL; SINK; DESIGN; OPTIMIZATION; NETWORK; CAVITIES;

D O I：

10.1080/10407782.2023.2238888

中图分类号：

O414.1 [热力学];

学科分类号：

摘要：

In this study, to solve the problems of high temperature in the region near the outlet of microchannel and the difficulty in manufacturing complex ribs, three concise rib configurations were proposed, i.e. semicircle rib (SE-MCHS), triangular rib (TR-MCHS) and square rib (SQ-MCHS), respectively. The flow, heat transfer and pressure drop characteristics, and the comprehensive performance for the designed MCHS were analyzed numerically. The results showed that for the case of SQ-MCHS, the heat transfer can be enhanced by a maximum of 273.22% compared to the regular straight channel at Re is 1000. However, SQ-MCHS also exhibited a maximum pressure drop. Therefore, the comprehensive heat transfer performance index was put forward to consider both heat transfer and pressure drop. Our analysis indicated that when Re is 400, the MCHS with square ribs had a better comprehensive performance, while when Re is more than 600, the MCHS with semicircle ribs has a better comprehensive performance. Our work should be of practical value for the design of high efficiency microscale heat sink.

引用

页码：3531 / 3543

页数：13

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