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Natural Convection of Temperature-Sensitive Magnetic Fluids in Porous Media

Published online by Cambridge University Press:  03 June 2015

Valentin Roussellet*
Affiliation:
Applied Mathematics and Systems Laboratory, École Centrale Paris, 92295 Châtenay-Malabry, France Department of Mechanical Engineering, Doshisha University, Kyoto 610-0321, Japan
Xiaodong Niu*
Affiliation:
Department of Mechanical Engineering, Doshisha University, Kyoto 610-0321, Japan
Hiroshi Yamaguchi*
Affiliation:
Department of Mechanical Engineering, Doshisha University, Kyoto 610-0321, Japan
Frédéric Magoulés*
Affiliation:
Applied Mathematics and Systems Laboratory, École Centrale Paris, 92295 Châtenay-Malabry, France
*
Corresponding author. URL: http://kenkyudb.doshisha.ac.jp/rd/search/researcher/108197/index-j.html Email: xniu@mail.doshisha.ac.jp
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Abstract

In this article, natural convection of a temperature-sensitive magnetic fluid in a porous media is studied numerically by using lattice Boltzmann method. Results show that the heat transfer decreases when the ball numbers increase. When the magnetic field is increased, the heat transfer is enhanced; however the average wall Nusselt number increases at small ball numbers but decreases at large ball numbers due to the induced flow being more likely confined near the bottom walls with a high number of obstacles.

Type
Research Article
Copyright
Copyright © Global-Science Press 2011

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