Laminar Forced Convection and Entropy Generation of ZnO-Ethylene Glycol Nanofluid Flow through Square Microchannel with using Two-Phase Eulerian-Eulerian Model

Authors

1 Automotive Technologies Program, TOBB Vocational School of Technical Sciences, Karabuk University, Karabuk, 78050, Turkey

2 Mechanical Engineering Department, Faculty of Engineering, Karabuk University, Karabuk, 78050, Turkey

3 Mechanical Engineering Department, Faculty of Engineering and Architecture, Necmettin Erbakan University, Konya, 42140, Turkey

Abstract

In this paper, convective heat transfer and entropy generation of ZnO-EG nanofluid flow through a square microchannel are numerically investigated. Flow is modelled by using Eulerian-Eulerian two phase flow model. Nanoparticle volume fraction of ZnO-EG nanofluid ranged between %1.0 and %4.0. As a result, it is found that the convective heat transfer coefficient of flow increased from 9718.15 W/m2K to 23010.79 W/m2K when 4.0% ZnO nanoparticle addition to pure EG at Re=100. Total entropy generation of ZnO-EG nanofluid decreases with increase in nanoparticle volume fraction of ZnO-EG nanofluid. It is also observed that the Bejan number decreases with increase in nanoparticle volume fraction of ZnO-EG nanofluid.

Keywords

Journal of Applied Fluid Mechanics
Volume 12, Issue 1
January 2019
Pages 1-10

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