Numerical simulation of fluid flow and heat transfer characteristics in a saw-like microchannel

被引：0
|
作者：
Liu Z. [1 ]
Zhang C. [1 ]
Han Q. [1 ]
Jiang H. [2 ]
Li W. [1 ]
机构：
[1] School of Energy and Environment, Southeast University, Jiangsu, Nanjing
[2] The 38th Research Institute of China, Electronics Technology Group Corporation, Anhui, Hefei
来源：
Huagong Jinzhan/Chemical Industry and Engineering Progress | 2023年 / 42卷 / 11期
关键词：
enhancement of conjugate heat transfer; fluid mixing; Nusselt number; saw-like microchannel;
D O I：
10.16085/j.issn.1000-6613.2022-2321
中图分类号：
学科分类号：
摘要：
In this study, a saw-like microchannel was proposed to enhance convective heat transfer. The fluid flow and heat transfer characteristics of this proposed microchannel were numerically investigated using COMSOL software. The effect of saw-like microchannel on fluid flow and heat transfer performance were studied in both forward and backward direction. The Reynolds number (Re) ranged from 50 to 700. The numerical results indicated that the present microchannel configuration greatly strengthened the spatial mixing of fluid and significantly disturbs the thermal boundary layer, leading to dramatic enhancement of convective heat transfer. Compared to conventional microchannel, Nusselt number (Nu) was significantly enhanced by 102.7%. Additionally, fluid flow and heat transfer characteristics of this saw-like microchannel in both forward and backward directions were investigated. At Re=700, the Nu in the backward direction was increased by 20% compared to that in forward direction. However, the pressure drop was magnified about 110%. © 2023 Chemical Industry Press. All rights reserved.
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页码：5622 / 5636
页数：14
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