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TECHNICAL PAPERS: Porous Media, Particles, and Droplets

Effective Permeability of a Layered Porous Cavity

[+] Author and Article Information
J. C. Leong, F. C. Lai

School of Aerospace and Mechanical Engineering, University of Oklahoma, Norman, OK 73019

J. Heat Transfer 123(3), 512-519 (Oct 06, 2000) (8 pages) doi:10.1115/1.1351164 History: Received April 07, 1999; Revised October 06, 2000
Copyright © 2001 by ASME
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References

Figures

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A layered porous cavity subject to differential heating from vertical walls: (a) vertical sublayers; (b) horizontal sublayers.
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Validation of numerical code (K1/K2=1); the result from the present study is represented by the solid line.
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Flow fields in a porous cavity with vertical sublayers (L1/L=0.5,ΔΨ=1 for K1/K2<1 and ΔΨ=0.1 for K1/K2>1)
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Temperature fields in a porous cavity with two vertical sublayers (L1/L=0.5,Δθ=0.1)
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Flow fields in a porous cavity with two vertical sublayers (Ra1=100,ΔΨ=0.1 for K1/K2<1 and ΔΨ=0.1 for K1/K2>1)
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Temperature fields in a porous cavity with two vertical sublayers (Ra1=100,Δθ=0.1)
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Flow fields in a porous cavity with two horizontal sublayers (H1/H=0.5,ΔΨ=2 for K1/K2<1 and ΔΨ=0.25 for K1/K2>1)
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Temperature fields in a porous cavity with horizontal sublayers (H1/H=0.5,Δθ=0.1)
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Flow fields in a porous cavity with horizontal sublayers (Ra1=100,ΔΨ=5 for K1/K2<1 and ΔΨ=0.5 for K1/K2>1)
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Temperature fields in a porous cavity with horizontal sublayers (Ra1=100,Δθ=0.1)
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Electric circuit analogy for natural convection in a layered porous cavity: (a) vertical sublayers; (b) horizontal sublayers; (c) an equivalent homogeneous layer.
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Heat transfer results for a porous cavity with vertical sublayers: (a) arithmetic mean; (b) harmonic mean.
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Heat transfer results for a porous cavity with horizontal sublayers: (a) arithmetic mean; (b) harmonic mean.

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