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Advances in Mathematical Physics
Volume 2014 (2014), Article ID 874132, 11 pages
http://dx.doi.org/10.1155/2014/874132
Research Article

Numerical Analysis of Nanofluids in Differentially Heated Enclosure Undergoing Orthogonal Rotation

H. Saleh1 and I. Hashim1,2,3

1Centre for Modelling & Data Analysis, School of Mathematical Sciences, Universiti Kebangsaan Malaysia, UKM 43600 Bangi, Selangor, Malaysia
2Solar Energy Research Institute, Universiti Kebangsaan Malaysia, UKM 43600 Bangi, Selangor, Malaysia
3Department of Mathematics, Faculty of Science, King Abdulaziz University, P. O. Box 80257, Jeddah 21589, Saudi Arabia

Received 29 October 2013; Accepted 21 February 2014; Published 6 April 2014

Academic Editor: Yao-Zhong Zhang

Copyright © 2014 H. Saleh and I. Hashim. This is an open access article distributed under the Creative Commons Attribution License, which permits unrestricted use, distribution, and reproduction in any medium, provided the original work is properly cited.

Abstract

Natural convection heat transfer in a rotating, differentially heated enclosure is studied numerically in this paper. The rotating enclosure is filled with water-Ag, water-Cu, water-Al2O3, or water-TiO2 nanofluids. The governing equations are in velocity, pressure, and temperature formulation and solved using the staggered grid arrangement together with MAC method. The governing parameters considered are the solid volume fraction, , and the rotational speeds,  rpm, and the centrifugal force is smaller than the Coriolis force and both forces were kept below the buoyancy force. It is found that the angular locations of the local maximums heat transfer were sensitive to rotational speeds and nanoparticles concentration. The global quantity of heat transfer rate increases about 1.5%, 1.1%, 0.8%, and 0.6% by increasing 1% of the nanoparticles Ag, Cu, Al2O3, and TiO2, respectively, for the considered rotational speeds.