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Natural convection inside dome shaped enclosures

journal contribution
posted on 2002-01-01, 00:00 authored by Subrat DasSubrat Das, Y Morsi
In the present paper the analysis of heat transfer and free convective motion have been carried out numerically for dome shaped enclosures. The solution method is based on the finite element technique with the frontal solver and is used to examine the flow parameters and the heat transfer characteristics inside dome shaped enclosures of various offsets. In formulating the solution a general conic equation is considered to represent the dome of circular, elliptical, parabolic and hyperbolic shapes. The numerical results indicate that the circular and elliptical shapes of dome give higher heat transfer rate and offset of the dome effects convective heat transfer quite significantly. However, beyond 0.3 top dome offset, the change in overall heat transfer rate is not significant. In addition, the convective phenomenon influenced by a dome shaped cover results in establishing a secondary core region even at a moderate Rayleigh number when compared with an equivalent rectangular enclosure. A good comparison between the present numerical predictions and the previous published data is achieved.

History

Journal

International journal of numerical methods for heat and fluid flow

Volume

12

Issue

2

Pagination

126 - 141

Publisher

Emerald Group Publishing Limited

Location

Bingley, England

ISSN

1758-6585

eISSN

0961-5539

Language

eng

Publication classification

C1.1 Refereed article in a scholarly journal

Copyright notice

2002, MCB UP Limited

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