Technical Briefs

Heat Transfer Enhancement in Combined Convection Around a Horizontal Cylinder Using Nanofluids

[+] Author and Article Information
E. Abu-Nada1

Department of Mechanical Engineering,  Hashemite University, Zarqa 13115, Jordaneiyad@hu.edu.jo

K. Ziyad, M. Saleh, Y. Ali

Department of Mechanical Engineering,  Hashemite University, Zarqa 13115, Jordan


Corresponding author.

J. Heat Transfer 130(8), 084505 (Jun 04, 2008) (4 pages) doi:10.1115/1.2909616 History: Received June 20, 2007; Revised September 27, 2007; Published June 04, 2008

Heat transfer enhancement in combined convection around a rotating horizontal cylinder using nanofluids is presented. The transport equations are solved numerically using a second-order finite volume scheme. Water-based nanofluid containing various volume fractions of different types of nanoparticles is used. The nanoparticles used are Cu, Ag, Al2O3, and TiO2. In the region outside the plume, the Nusselt number increases by increasing the volume fraction of nanoparticles. However, in the plume region, the effect of the volume fraction of nanoparticles on the Nusselt number is less pronounced.

Copyright © 2008 by American Society of Mechanical Engineers
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Grahic Jump Location
Figure 3

Nusselt number distribution around the cylinder surface using various types of nanoparticles: φ=0.15, Pr=6.2, ReD=300, and Ri=1.887

Grahic Jump Location
Figure 2

(a) Nusselt number distribution around the cylinder surface using various volume fractions of Al2O3 nanoparticles: Pr=6.2, ReD=300, and Ri=1.887; (b) comparing the Nusselt number between pure water case and addition of 15% volume fraction of Al2O3 nanoparticles by overlapping plume regions in (a)

Grahic Jump Location
Figure 1

Sketch of problem geometry



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