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, doi: 10.1002/cjce.5450810216.

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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
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
DOI 10.1002/cjce.5450810216
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
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