Numerical simulation to model the effect of injection velocity on the thermo-hydraulic behavior of the microchannel fluid flow via Navier–Stokes equations joined with the slip velocity boundary condition
Donghai Laboratory, 316021, Zhoushan Zhejiang, China
2 Physics Department, College of Science, Majmaah University, 11952, AL-Majmaah, Al-Zulfi, Saudi Arabia
3 Independent researcher, Khartoum, Sudan
4 Department of Nutrition, Cihan University-Erbil, Erbil, Kurdistan Region, Iraq
5 Faculty of Mechanical Engineering, Opole University of Technology, 45758, Opole, Poland
6 Yonsei Frontier Lab, Yonsei University, 03722, Seoul, Republic of Korea
Accepted: 2 December 2022
Published online: 21 December 2022
The injection is one of the main factors to improve the heat transfer in the macro and microscale devices, especially in microchannels. The present research focuses on the impacts of injection velocity on heat transfer and fluid flow by utilizing computational fluid dynamics. The results claimed that the injections intensified both thermal and hydraulic gradient next to the wall in front of injection locations. Furthermore, the findings showed that there is a 25.22% enhancement in heat transfer in a microchannel with injection. When the injection was released in the microchannel at a higher velocity, a higher heat transfer was achieved While the lower Reynolds number (Re = 5) resulted in minimal heat transfer, at a higher Reynolds number (Re = 100) the microchannel achieved about 328% improvement. Moreover, increasing the present nanofluid volume fraction resulted in a higher heat transfer.
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