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Natural convection of aluminium oxide-water nanofluid

Afifah, A. N. and Syahrullail, Samion and Nor Azwadi, Che Sidik (2015) Natural convection of aluminium oxide-water nanofluid. Jurnal Teknologi, 75 (11). pp. 161-167. ISSN 2180-3722

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Official URL: http://dx.doi.org/10.11113/jt.v75.5345

Abstract

As suspending nanoparticles in fluid-based give tremendous promise in heat transfer application, an understanding on the mechanism of heat transfer is indispensable. The present study dealt with natural convection of nanofluid inside a square cavity heated at the bottom, while the upper part was exposed to the atmosphere. Experimental studies have been performed for various physical conditions, such as volume fractions of nanoparticles varying from 0% to 2.0%, different dispersion techniques of nanoparticles in fluid-based, and heating time from 0 to 35 minutes. In general, dynamic viscosity of nanofluid clearly increased with volume fraction, but decreased with the increasing temperature. It was found that improper dispersion technique resulted in viscous solution. On top of that, transport mechanism of thermophoresis and Brownian diffusion were considered in analysing heat transfer across the cavity.

Item Type:Article
Uncontrolled Keywords:natural convection, transport mechanisms
Subjects:T Technology > TJ Mechanical engineering and machinery
Divisions:Mechanical Engineering
ID Code:56153
Deposited By: Fazli Masari
Deposited On:15 Nov 2016 06:29
Last Modified:01 Nov 2017 04:16

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