Numerical analysis of fluid flow and heat transfer of flow between parallel plates having thick micro mixer

[+] Author and Article Information
Sudip Shyam

Department of Mechanical Engineering NIT Agartala

Aparesh Datta

Department of Mechanical Engineering NIT Agartala

Ajoy Kumar Das

Department of Mechanical Engineering NIT Agartala

1Corresponding author.

ASME doi:10.1115/1.4036769 History: Received September 09, 2016; Revised January 24, 2017


In this study, heat transfer and fluid flow of deionized water in two dimensional parallel plates micro channel with and without micro mixers have been investigated for various Reynolds number. The effect of heat transfer and fluid flow on height ,diameter of micro mixer and also distance between the two micromixers are carried out in the study. Results showed that the diameter of the micromixer does not have much effect on heat transfer with a maximum enhancement of 9.5% among the different diameter. Whereas; heat transfer gets enhanced by 85.57% when the height of the micro mixer is increased from 100µm to 400µm and also heat transfer gets improved by 11.45% when sb2 is increased from 4L to 5L. The separation and reattachment zone at the entry and exit of the micromixer cause the increase in heat transfer with the penalty of pressure drop. It is also found that increase of Reynolds number increases the intensity of the secondary flows leads to rapid increase in heat transfer and pressure drop. Finally, the optimized structure of micromixer is found out based on maximum heat transfer and minimum pressure drop.

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