Publication: Three-Dimensional Numerical Investigation of Nanofluids Flow in Microtube with Different Values of Heat Flux
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Date
2015
Authors
Salman B.H.
Mohammed H.A.
Munisamy K.M.
Kherbeet A.S.
Journal Title
Journal ISSN
Volume Title
Publisher
John Wiley and Sons Inc
Abstract
Forced convective laminar flow of different types of nanofluids such as Al2O3, CuO, SiO2, and ZnO, with different nanoparticle size 25, 45, 65, and 80 nm, and different volume fractions which ranged from 1% to 4% using ethylene glycol as base fluids were used. A three-dimensional microtube (MT) with 0.05 cm diameter and 10 cm in length with different values of heat fluxes at the wall is numerically investigated. This investigation covers Reynolds number (Re) in the range of 80 to 160. The results have shown that SiO2-EG nanofluid has the highest Nusselt number (Nu), followed by ZnO-EG, CuO-EG, Al2O3-EG, and finally pure EG. The Nu for all cases increases with the volume fraction but it decreases with the rise in the diameter of nanoparticles. In all configurations, the Nu increases with Re. In addition, no effect of heat flux values on the Nu was found. � 2015 Wiley Periodicals, Inc.
Description
Alumina; Aluminum oxide; Copper oxides; Ethylene; Ethylene glycol; Forced convection; Heat transfer; II-VI semiconductors; Laminar flow; Nanofluidics; Nanoparticles; Oxide minerals; Reynolds number; Silica; Silicon; SiO2 nanoparticles; Volume fraction; Zinc oxide; Heat transfer augmentation; Microtube; Nanofluids; Nanoparticle sizes; Numerical investigations; Heat flux