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Electromagnetohydrodynamic Flow and Heat Transfer of Nanofluid in a Parallel Plate Microchannel

Published online by Cambridge University Press:  05 August 2016

G.-P. Zhao ,
Y.-J. Jian  and
F.-Q. Li
G.-P. Zhao
Affiliation:
School of Mathematical ScienceInner Mongolia UniversityHohhot, China
Y.-J. Jian*
Affiliation:
School of Mathematical ScienceInner Mongolia UniversityHohhot, China
F.-Q. Li
Affiliation:
School of Mathematical ScienceInner Mongolia UniversityHohhot, China
*
*Corresponding author ([email protected])
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Abstract

The present study is devoted to electromagnetohydrodynamic (EMHD) flow and heat transfer characteristics of nanofluid inside a parallel plate microchannel. The nanofluid is actuated by Lorentz force which is originated from the interaction of applied electrical field and perpendicular magnetic field. A fully developed assumption with uniform flux at the surface is considered in the analysis, and the influences of viscous dissipation as well as Joule heating are also taken into account. The analytical solutions for velocity and temperature are derived. Moreover, the Nusselt number variations are examined. The results show that the Hartmann number, the dimensionless parameter S and the nanoparticls volume fraction have significant influences on flow and temperature of nanofluid. As Hartmann number increasing, the Nusselt number improves and similar trend can be observed with the augment of nanoparticls volume fraction. A diminishment of heat transfer performance can be seen with increase of the Joule parameter and Brinkman number, while an enhancement in heat transfer can be witnessed with increase of nanoparticls volume fraction.

Keywords

NanofluidHeat transferElectromagnetohydrodynamic (EMHD)Nusselt number
Type
Research Article
Information
Journal of Mechanics , Volume 33 , Issue 1 , February 2017 , pp. 115 - 124
Copyright
Copyright © The Society of Theoretical and Applied Mechanics 2017 

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