Title of article :
Effect of Axial Conduction and Variable Properties on Two- Dimensional Conjugate Heat Transfer of Al2O3-EG/Water Mixture Nanofluid in Microchannel
Author/Authors :
Ramiar، A. نويسنده , , Ranjbar، AA نويسنده , , Hosseinizadeh، S.F. نويسنده ,
Issue Information :
ماهنامه با شماره پیاپی 13 سال 2012
Abstract :
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Conjugate heat transfer of a nanofluid containing Al 2 O 3 nanoparticles dispersed in a mixture of 60% ethylene glycol
and 40% water by mass (60:40 EG/W) in a two dimensional microchannel has been solved numerically. The effect of
axial conduction in both solid and liquid regions has been considered in a range of Reynolds numbers in laminar
regime. The utilized nanofluid models are capable of considering variation of thermal conductivity and dynamic
viscosity with temperature. The results show that using nanoparticles with higher thermal conductivities will enhance
heat transfer characteristics of the channel. Comparing the nanofluid with pure mixture revealed that adding
nanoparticles will decrease conduction number which is a scale of axial conduction. Also, it was found that
considering variable properties will cause severe changes to the Nusselt number distribution especially for low
Reynolds numbers.
Journal title :
Journal of Applied Fluid Mechanics (JAFM)
Journal title :
Journal of Applied Fluid Mechanics (JAFM)
