A critical review of forced convection in microchannels

Al-Saadi, Ahmed Ali Shakir

doi:10.30772/qjes.2023.141506.1003

	A critical review of forced convection in microchannels
Al-Qadisiyah Journal for Engineering Sciences
Articles in Press, Accepted Manuscript, Available Online from 30 January 2024 PDF (635.16 K)
Document Type: Review Paper
DOI: 10.30772/qjes.2023.141506.1003
Author
Ahmed Ali Shakir Al-Saadi^*
Department of Mechanical Engineering, College of Engineering, University of Al-Qadisiyah, Room 16, Al Diwaniyah, Iraq
Abstract
The dissipation of excessive heat flux is presently a significant issue that needs to be addressed due to the use of microdevices in fields such as nuclear energy, electronic devices, aerospace engineering, building engineering, and more. Because their increased heat transfer and compact size, microchannel cooling systems have become an effective way to manage the temperature of microdevices and equipment upgrades. However, due to the increasing demands placed on microdevices for thermal load, controlling the temperature, and conserving energy, efficient heat exchangers, in particular microchannels, are attracting a growing amount of interest. A key passive technique for successfully increasing the heat transfer of the microchannel cooling system and improving the performance of microchannels is channel shape optimization. Therefore, the characteristics of microchannel geometry from prior research has been reviewed, categorized, and summed up in this article. The analysis focuses primarily on structural features and microchannel geometry attributes that enhance the impact of pressure drop and heat transfer. It also presents the relationship between boiling heat transfer and the geometrical features of microchannel flow and discusses the potential study directions for microchannel geometry design. The current review of microchannels will provide researchers working on these microchannel components with specialized expertise. In an effort to improve the impact of heat transfer, this study reviews, categorizes, and summarizes the characteristics of prior studies' microchannel geometry.
Keywords
Microchannel; Laminar; Heat transfer; CFD simulation; Thermal analysis

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