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TECHNICAL PAPERS: Porous Media

Thermosolutal Convection in a Partly Porous Vertical Annular Cavity

[+] Author and Article Information
M. Benzeghiba, S. Chikh

Département de Génie Mécanique, USTHB, B.P. 32, El Alia, Bab Ezzouar 16111, Alger, Algeria

A. Campo

Department of Mechanical Engineering, The University of Vermont, Burlington, VT 05405, USA

J. Heat Transfer 125(4), 703-715 (Jul 17, 2003) (13 pages) doi:10.1115/1.1589501 History: Received May 03, 2002; Revised March 21, 2003; Online July 17, 2003
Copyright © 2003 by ASME
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References

Figures

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Schematic of physical domain
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Flow, isothermal, and isoconcentrations patterns in fluid case for different radii ratios, Ra=104,N=−3, Pr=7, Le=21.71, and A=1: (a) Kr=1,Ψmin=−6, ΔΨ=0.5,Ψmax=0; (b) Kr=4,Ψmin=−0.45, ΔΨ=0.5, Ψmax=0.6; and (c) Kr=20,Ψmin=−0.2, ΔΨ=0.1, Ψmax=1.1.
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Velocity distribution in the middle plans in fluid case for different radii ratios, Ra=104,N=−3, Pr=7, Le=21.71, and A=1: (a) Axial velocity at z=0.5; and (b) Radial velocity at r=0.5.
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Effect of A on flow, isothermal, and isoconcentrations patterns in fluid case for Ra=104,N=−3, Pr=7, Le=21.71, and Kr=5: (a) A=1,Ψmin=−0.35, ΔΨ=0.05, Ψmax=0.7; and (b) A=10,Ψmin=−2, ΔΨ=0.5, Ψmax=6.
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Effect of A in partly porous cavity for Ra=104,N=−1.5, Pr=7, Le=21.71, Kr=5, E=0.3,r1=0.35, and Da=10−3
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Variations of Nusselt and Sherwood numbers with Lewis number for Ra=104,N=−3,A=1, and Kr=5
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Effect of N on flow, isothermal, and isoconcentrations patterns in fluid case for Ra=104, Pr=7, Le=21.71, A=1, and Kr=5: (a) N=−5,Ψmin=−0.16, ΔΨ=0.02, Ψmax=0.28; (b) N=−1.5,Ψmin=−0.05, ΔΨ=0.2, Ψmax=3.18 and −0.15; and (c) N=5,Ψmin=0, ΔΨ=0.2, Ψmax=3.
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Effect of N in partially porous case for Ra=104, Pr=7, Le=21.71, A=1,Kr=5, and Da=10−3: (a) N=−5,Ψmin=−0.15, ΔΨ=0.05, Ψmax=0.4; (b) N=−1.5,Ψmin=−0.1, ΔΨ=0.1, Ψmax=1.5 and −0.05; and (c) N=5,Ψmin=0, ΔΨ=0.1, Ψmax=1.3.
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Effect of N in partly porous case for Ra=104, Pr=7, Le=21.71, A=1,Kr=5, and Da=10−5: (a) N=−5,Ψmin=−0.14, ΔΨ=0.05, Ψmax=0.22; (b) N=−1.5,Ψmin=−0.06, ΔΨ=0.02, Ψmax=0.4 and −0.05, −0.01; and (c) N=5,Ψmin=0, ΔΨ=0.02, Ψmax=0.3.
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Variations of Nusselt and Sherwood numbers with buoyancy ratio for Ra=104,A=1, and Kr=5
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Variations of Nusselt and Sherwood numbers with thickness of porous layer for Ra=104,N=−3,A=1, and Kr=5
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Variation of Nusselt number with conductivity ratio in porous layer for Ra=104,N=−3, Pr=0.7, Le=0.86, A=1, and Kr=5

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