Open Access

ARTICLE

EFFECT OF MAGNETIC FIELD INCLINATION ON MAGNETOCONVECTIVE INDUCED IRREVERSIBILITIES IN A CNT-WATER NANOFLUID FILLED CUBIC CAVITY

Abdullah A.A.A. Al-Rashed^a , Lioua Kolsi^b,d,*, K. Kalidasan^c , Chemseddine Maatki^d, Mohamed Naceur Borjini^d , Mohamed Aichouni^b, P. Rajesh Kanna^e

a Dept. of Automotive and Marine Engineering Technology, College of Technological Studies, the Public Authority for Applied Education and Training, Kuwait
b College of Engineering, Mechanical Engineering Department, Haïl University, Haïl City, Saudi Arabia
c Department of Civil Engineering, Arulmigu Palaniandavar Polytechnic College, Palani, Tamilnadu - 624 601, India.
d Unité de Métrologie et des Systèmes Énergétiques, École Nationale d’Ingénieurs, Monastir, University of Monastir, Tunisia
e Department of Mechanical Engineering, Velammal College of Engineering and Technology, Madurai, Tamilnadu - 625 009, India.

* Corresponding Author: Email: .

Frontiers in Heat and Mass Transfer 2017, 8, 1-10. https://doi.org/10.5098/hmt.8.31

Abstract

A finite volume based three dimensional numerical analysis is performed on the effect of angle of inclination of the external magnetic force on entropy generation due to natural convection inside the cubical cavity filled with CNT - water nanofluid. The governing equations are numerically solved by vorticity - vector potential formalism. The vertical walls of enclosure are differentially heated and the horizontal walls are adiabatic. The effect due to Rayleigh number (10³ ≤ Ra ≤ 10⁵), Hartmann number (0 ≤ Ha ≤ 100), angle of inclination of external magnetic field (0° ≤ α ≤ 90°) and volumetric fraction (0 ≤ φ ≤ 0.05) of CNT particles are investigated. The results of irreversibility process with single phase model are illustrated with entropy generation and Bejan number. The effect of angle of inclination is more pronounced when Rayleigh number is 10⁵.

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