Numerical heat transfer and entropy analysis on liquid slip flows through parallel-plate microchannels

Shojaeian, Mostafa and Nedaei, Masoumeh and Yıldız, Mehmet and Koşar, Ali (2018) Numerical heat transfer and entropy analysis on liquid slip flows through parallel-plate microchannels. Journal of Thermal Science and Engineering Applications, 10 (2). ISSN 1948-5085 (Print) 1948-5093 (Online)

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Abstract

In this study, two-dimensional (2D) numerical simulations of liquid slip flows in parallel-plate microchannels have been performed to obtain heat transfer characteristics and entropy generation rate under asymmetric heating conditions. Heat transfer analysis has been conducted along with second-law analysis through utilizing temperature-dependent thermophysical properties. The results indicate that temperature-dependent thermophysical properties have a positive effect on convective heat transfer and entropy generation. Nusselt numbers of the upper and lower plates and global entropy generation rates are significantly affected by slip parameter and heat flux ratio. It is shown that Nusselt number of the lower plate may have very large but finite values at a specific heat flux ratio. This finding resembles to analytical solutions, where singularities leading to an infinite Nusselt number exist.
Item Type: Article
Subjects: T Technology > TJ Mechanical engineering and machinery
Q Science > QC Physics
Divisions: Faculty of Engineering and Natural Sciences > Academic programs > Mechatronics
Faculty of Engineering and Natural Sciences > Academic programs > Materials Science & Eng.
Faculty of Engineering and Natural Sciences
Depositing User: Ali Koşar
Date Deposited: 13 Jul 2018 14:51
Last Modified: 16 May 2023 16:03
URI: https://research.sabanciuniv.edu/id/eprint/34354

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