Md Readul Mahmud

Abstract:

The design and characterization of a passive planar O mixer with two different kinds of barriers to improve mixing performance are reported in this study. The computational fluid dynamics (CFD) program ANSYS 15 is used to perform computational studies on mixing and fluid flow in microchannels over a broad range of Reynolds numbers, from 1 to 100. The outcomes demonstrate that the O mixer with obstacles performs significantly better at mixing than the O mixer without obstacles. The explanation is that obstacles cause the fluid path length to increase, giving the fluids more time to diffuse. The O mixer with circular and fin obstacles is three times more efficient than the O mixer without obstacles in all scenarios. Due to the absence of any obstructions within the channel, the O mixer has the lowest pressure drop. The O mixer with circular & fin obstacles is the most economical one since it has the lowest mixing cost, which is a crucial feature for incorporation into intricate, cascading microfluidic systems. The proposed O mixer with obstacles can be easily manufactured and integrated into devices for a variety of macromixing applications due to its low mixed cost and simple planar construction.

Keywords: CFD, Efficiency, Micromixer, Mixing cost, Planar mixer.

Date Published: February 5, 2024
DOI: 10.11159/jffhmt.2024.003

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