Numerical simulation of flow and heat transfer characteristics of microchannels with ribbed structures of bionic fish fins

IF 3.5 2区工程技术 Q1 ENGINEERING, MECHANICAL

International Journal of Refrigeration-revue Internationale Du Froid Pub Date : 2025-07-12 DOI:10.1016/j.ijrefrig.2025.07.012

Chenlei Zhao, Lijuan He, WenXi You, XinYu Meng, Zhi Li

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Abstract

In order to improve the heat dissipation performance and comprehensive performance, a new type of bionic fish fin-rib microchannel heat sink is designed. The microchannel heat sink adopts symmetrical fish fin sidewalls and contains rectangular ribs in the channel. In this paper, the flow and heat transfer characteristics of smooth linear microchannels (MC), rectangular-rib smooth linear microchannels (MC-RP), fish fin microchannels (FN) and fish fin-rib microchannels (FN-RP) are studied by numerical methods, and the influence mechanism of the composite structure of micro-ribs and fish fin channels on the flow and heat transfer performance enhancement of microchannel heat exchangers is explored. The results show that the comprehensive evaluation coefficient of the fish fin-rib microchannel is the best among the four channels, reaching 1.82 at Re = 800. The effects of rectangular, diamond, teardrop- shaped and fish fin-shaped ribs on the microchannel are further studied, and the fish fin ribs are the best.

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仿生鱼鳍肋状微通道流动与传热特性的数值模拟

为了提高散热性能和综合性能，设计了一种新型仿生鱼鳍肋微通道散热片。微通道散热器采用对称鱼鳍侧壁，在通道内包含矩形肋。本文采用数值方法研究了光滑线性微通道（MC）、矩形肋光滑线性微通道（MC- rp）、鱼鳍微通道（FN）和鱼鳍肋微通道（FN- rp）的流动和换热特性，探讨了微肋和鱼鳍通道复合结构对微通道换热器流动和换热性能增强的影响机理。结果表明：鱼鳍肋微通道的综合评价系数在4种通道中最好，在Re = 800时达到1.82；进一步研究了矩形、菱形、水滴形和鱼鳍形排骨对微通道的影响，以鱼鳍形排骨效果最好。

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来源期刊

International Journal of Refrigeration-revue Internationale Du Froid 工程技术-工程：机械

CiteScore

7.30

自引率

12.80%

发文量

363

审稿时长

3.7 months

期刊介绍： The International Journal of Refrigeration is published for the International Institute of Refrigeration (IIR) by Elsevier. It is essential reading for all those wishing to keep abreast of research and industrial news in refrigeration, air conditioning and associated fields. This is particularly important in these times of rapid introduction of alternative refrigerants and the emergence of new technology. The journal has published special issues on alternative refrigerants and novel topics in the field of boiling, condensation, heat pumps, food refrigeration, carbon dioxide, ammonia, hydrocarbons, magnetic refrigeration at room temperature, sorptive cooling, phase change materials and slurries, ejector technology, compressors, and solar cooling. As well as original research papers the International Journal of Refrigeration also includes review articles, papers presented at IIR conferences, short reports and letters describing preliminary results and experimental details, and letters to the Editor on recent areas of discussion and controversy. Other features include forthcoming events, conference reports and book reviews. Papers are published in either English or French with the IIR news section in both languages.