Natural convection in heat generating oval porous enclosurse : a non-darcian model

Das, Subrat, Sahoo, Ranjit Kumar and Morsi, Yos S. 2003, Natural convection in heat generating oval porous enclosurse : a non-darcian model, Canadian journal of chemical engineering, vol. 81, no. 2, pp. 289-296.

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Title Natural convection in heat generating oval porous enclosurse : a non-darcian model
Author(s) Das, Subrat
Sahoo, Ranjit Kumar
Morsi, Yos S.
Journal name Canadian journal of chemical engineering
Volume number 81
Issue number 2
Start page 289
End page 296
Total pages 8
Publisher Wiley - Blackwell Publishing
Place of publication Hoboken N. J.
Publication date 2003-04
ISSN 0008-4034
1939-019X
Keyword(s) natural convection
porous media
brinkman model
oval enclosure
Summary This paper presents a series of numerical simulations dealing with the problem of natural convection flows and associated heat transfer in an enclosure filled with a fluid-saturated porous medium. The analysis is based on the finite element technique and incorporates the Brinkman-extended Darcy model for an oval enclosure. The numerical results obtained for a modified Rayleigh number, Ra, Darcy number, Da, offset, E, and eccentricity, e, are presented and discussed. The numerical predictions for a square enclosure compared well with published data. It is found that any increase in Da or Ra results in a higher fluid velocity that is responsible for shifting the core of the flow. Moreover, at higher ovality (E = 0.5), asymmetric flow is observed even at the lower range of Rayleigh number (Ra ⩽ 20), which may be attributed to the effect of curved isothermal wall.
Language eng
Field of Research 099999 Engineering not elsewhere classified
Socio Economic Objective 970109 Expanding Knowledge in Engineering
HERDC Research category C1.1 Refereed article in a scholarly journal
Persistent URL http://hdl.handle.net/10536/DRO/DU:30039804

Document type: Journal Article
Collection: School of Engineering
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