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Journal of Porous Media
インパクトファクター: 1.49 5年インパクトファクター: 1.159 SJR: 0.43 SNIP: 0.671 CiteScore™: 1.58

ISSN 印刷: 1091-028X
ISSN オンライン: 1934-0508

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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

要約

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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