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Natural convection heat transfer in nanofluids - a numerical study

Rashmi, W. and Ismail, Ahmad Faris and Asrar, Waqar and Khalid, M. and Yusof, Faridah (2008) Natural convection heat transfer in nanofluids - a numerical study. In: Proceedings of the 7th Symposium on Transport Phenomenon in Manufacturing Processes 2008, August 10–14, 2008, Jacksonville, Florida, USA.

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Abstract

Natural convection heat transfer in nanofluids has been investigated numerically using computational fluid dynamics (CFD) approach. Analytical models that describe molecular viscosity, density, specific heat, thermal conductivity and coefficient of thermal expansion have been considered in terms of volume fraction and size of nanoparticles, size of base fluid molecule and temperature. The uniform suspensions of different concentrations of Al2O3 in base fluid (water) are considered as nanofluids. Thermal conductivity of the nanofluids has been obtained by solving the governing equations in conjunction with Kinetic model and interfacial layer model using FLUNET 6.3. Numerical simulations have been carried out in a closed pipe for L/D = 1.0. The numerical values of k have also been compared with the experimental values available in the literature. Both the models gave similar predictions with experimentally compared values of k.

Item Type: Conference or Workshop Item (Full Paper)
Additional Information: 1743/6030 Paper no. FEDSM2008-55213 Volume 1: Symposia, Parts A and B ISBN: 978-0-7918-4840-1
Subjects: T Technology > TA Engineering (General). Civil engineering (General) > TA329 Engineering mathematics. Engineering analysis
Kulliyyahs/Centres/Divisions/Institutes (Can select more than one option. Press CONTROL button): Kulliyyah of Engineering > Department of Mechanical Engineering
Depositing User: Prof. Waqar Asrar
Date Deposited: 11 May 2012 11:23
Last Modified: 16 Nov 2012 08:47
URI: http://irep.iium.edu.my/id/eprint/6030

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