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Journal of Porous Media
Fator do impacto: 1.49 FI de cinco anos: 1.159 SJR: 0.504 SNIP: 0.671 CiteScore™: 1.58

ISSN Imprimir: 1091-028X
ISSN On-line: 1934-0508

Volumes:
Volume 22, 2019 Volume 21, 2018 Volume 20, 2017 Volume 19, 2016 Volume 18, 2015 Volume 17, 2014 Volume 16, 2013 Volume 15, 2012 Volume 14, 2011 Volume 13, 2010 Volume 12, 2009 Volume 11, 2008 Volume 10, 2007 Volume 9, 2006 Volume 8, 2005 Volume 7, 2004 Volume 6, 2003 Volume 5, 2002 Volume 4, 2001 Volume 3, 2000 Volume 2, 1999 Volume 1, 1998

Journal of Porous Media

DOI: 10.1615/JPorMedia.v12.i3.60
pages 265-275

Heatline and Energy-Flux-Vector Visualization of Natural Convection in a Porous Cavity Occupied by a Fluid with Temperature-Dependent Viscosity

Kamel Hooman
Queensland Geothermal Energy Centre of Excellence, School of Mechanical and Mining Engineering University of Queensland, Brisbane, Queensland, AU
Hal Gurgenci
School of Mechanical and Mining Engineering, The University of Queensland, Brisbane, QLD 4072, Australia
Ibrahim Dincer
Faculty of Engineering and Applied Science, University of Ottawa Institute of Technology, Ontario L1H 7K4, Canada

RESUMO

Temperature-dependent viscosity effects in buoyancy-driven flow in a porous saturated enclosure is studied numerically, based on the general model of momentum transfer in a porous medium. The exponential form of the viscosity-temperature relation is applied. Both cases of viscosity increase and decrease versus temperature are considered. Application of the effective Rayleigh number concept and the reference temperature approach are investigated. Use of heat lines and energy flux vectors are illustrated for a more comprehensive analysis of the problem.


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