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Titolo:
Buoyant convection in a square cavity partially filled with a heat-generating porous medium
Autore:
Kim, GB; Hyun, JM; Kwak, HS;
Indirizzi:
Korea Adv Inst Sci & Technol, Dept Mech Engn, Taejon 305701, South Korea Korea Adv Inst Sci & Technol Taejon South Korea 305701 5701, South Korea Kumoh Natl Univ Technol, Sch Mech Engn, Kyeongsangbukdo, South Korea KumohNatl Univ Technol Kyeongsangbukdo South Korea gbukdo, South Korea
Titolo Testata:
NUMERICAL HEAT TRANSFER PART A-APPLICATIONS
fascicolo: 6, volume: 40, anno: 2001,
pagine: 601 - 618
SICI:
1040-7782(20011109)40:6<601:BCIASC>2.0.ZU;2-8
Fonte:
ISI
Lingua:
ENG
Soggetto:
EXTENDED DARCY MODEL; NATURAL-CONVECTION; RECTANGULAR ENCLOSURE; FLUID; LAYERS; FLOW; SIDE;
Tipo documento:
Article
Natura:
Periodico
Settore Disciplinare:
Engineering, Computing & Technology
Citazioni:
26
Recensione:
Indirizzi per estratti:
Indirizzo: Hyun, JM Korea Adv Inst Sci & Technol, Dept Mech Engn, Taejon 305701, South Korea Korea Adv Inst Sci & Technol Taejon South Korea 305701 th Korea
Citazione:
G.B. Kim et al., "Buoyant convection in a square cavity partially filled with a heat-generating porous medium", NUM HEAT A, 40(6), 2001, pp. 601-618

Abstract

Steady-state buoyant convection in a rectangular cavity, partially filled with a fluid-saturated porous medium with spatially uniform internal heat generation, is considered. The Brinkman-extended Darcy model in the porous region is adopted. The overall Rayleigh number is large to render a boundary-layer-type global flow pattern. Scale analysis is performed to obtain a rudimentary understanding of the flow characteristics. In parallel with the theoretical endeavors, numerical solutions are secured over broad ranges of nondimensional parameters. The results indicate that there exists an asymptotic convection regime where the flow is nearly independent of the permeability and conductivity of the porous medium. The effect of the thermal conductivity of porous material is appreciable in the intermediate regime. In the conduction-dominant regime, the porous region acts like a heat-generatingsolid block. The numerical study gives credence to the reliability of the theoretical arguments.

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Documento generato il 06/07/20 alle ore 05:53:55