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Analysis of heat transfer enhancement in microchannel by varying the height of pin fins at upstream and downstream region
Proceedings of the Institution of Mechanical Engineers, Part E: Journal of Process Mechanical Engineering ( IF 2.4 ) Pub Date : 2021-02-04 , DOI: 10.1177/0954408921992975
Mohammad Nawaz Khan 1 , Munawwar Nawab Karimi 1
Affiliation  

In this study, a numerical analysis of a microchannel with the different configuration of varying height of pin fins entrenched at the bottom of the channel base wall has been carried out. Five different configurations of pin fins arrangement which are considered in this study are, Case 1(Full length fins in complete microchannel), Case 2(Full length fins at the upstream), Case 3(Full length fins at the downstream), Case 4(Full length fin at the center of microchannel), Case 5(Full length fins at the inlet and exit of microchannel) and the results of these five cases are compared with the plain rectangular microchannel. In this investigation, deionized ultra-filtered water is used and Reynold’s number is ranging from 150 to 350. Results reveals that the highest Nusselt number is achieved by case 2 at a lesser value of Reynold’s number while by case 5 at higher Reynold’s number and the lowest pressure drop is occurring in case 4. The overall thermal performance of case 2 beats the corresponding cases.



中文翻译:

通过改变上游和下游区域针状翅片的高度来分析微通道中的传热

在这项研究中,已经对微通道进行了数值分析,该微通道具有在通道底壁底部盘绕的不同高度的针状翅片。本研究考虑了五种不同的引脚鳍布置,分别是案例1(完整微通道中的全长鳍),案例2(上游的全长鳍),案例3(下游的全长鳍),案例4 (在微通道中心的全长鳍片),案例5(在微通道的入口和出口的全长鳍片),并将这5种情况的结果与普通矩形微通道进行了比较。在这项研究中,使用了去离子超滤水,雷诺数为150至350。

更新日期:2021-02-05
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