Impact of Magnetohydrodynamics on Thermal Mixing Efficiency and Entropy Generation Analysis Passing Through a Micromixer Using Non-Newtonian Nanofluid
Naas Toufik Tayeb, Youcef Abdellah Ayoub Laouid, Ayache Lakhdar, Telha Mostefa, Sun Min Kim, Shakhawat Hossain
TL;DR
This study explores how magnetohydrodynamics improves thermal mixing and reduces entropy in micromixers using non-Newtonian nanofluids.
Contribution
The novel use of magnetohydrodynamics with non-Newtonian Al2O3 nanofluids to enhance micromixer performance is presented.
Findings
Magnetohydrodynamics enhances mixing efficiency by generating vortices.
Adjusting nanoparticle concentration and power law index optimizes thermal mixing.
Entropy generation is reduced with optimized fluid properties.
Abstract
The present paper investigates the steady laminar flow and thermal mixing performance of non-Newtonian Al2O3 nanofluids within a two-layer cross-channel micromixer, employing three-dimensional numerical simulations to solve the governing equations across a low Reynolds number range (0.1 to 50). It also addresses secondary flows and thermal mixing performance with two distinct inlet temperatures for thin nanofluids. Additionally, it explores how fluid properties and varying concentrations of Al2O3 nanoparticles impact thermal mixing efficiency and entropy generation. Simulations were conducted to optimize performance by adjusting the power law index (n) across different nanoparticle concentrations (1–5%). The findings show that magnetohydrodynamics can enhance mixing efficiency by generating vortices and altering flow behavior, providing important guidance for improving microfluidic…
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Taxonomy
TopicsNanofluid Flow and Heat Transfer · Microfluidic and Capillary Electrophoresis Applications · Heat Transfer and Optimization