Conjugate natural convection in a square enclosure containing volumetric sources

Citation
A. Liaqat et Ac. Baytas, Conjugate natural convection in a square enclosure containing volumetric sources, INT J HEAT, 44(17), 2001, pp. 3273-3280
Citations number
16
Categorie Soggetti
Mechanical Engineering
Journal title
INTERNATIONAL JOURNAL OF HEAT AND MASS TRANSFER
ISSN journal
00179310 → ACNP
Volume
44
Issue
17
Year of publication
2001
Pages
3273 - 3280
Database
ISI
SICI code
0017-9310(200109)44:17<3273:CNCIAS>2.0.ZU;2-W
Abstract
Laminar natural convection flow in a square enclosure having thick conducti ng walls has been analysed numerically. Enclosing walls are considered to h ave finite conductive properties. Problem has been analysed using control v olume approach and employing ghost nodes at the solid fluid interface. Outs ides of the walls are kept at constant temperature. Square cavity is assume d to be filled with a Bousinessq fluid with a Prandtl number of 7.0 contain ing uniform volumetric sources. Rayleigh number is varied from 10(7) to 10( 12). For special cases, benchmark results compare very well with the result s from open literature. Isotherms, streamlines and wall Nusselt numbers are obtained and scrutinised. Results show a significant change in the buoyant flow parameters as compared to conventional non-conjugate investigations. Especially, it has been shown that walls having high thermal diffusivity ar e much better suited, if the cooling of the enclosed fluid is intended. (C) 2001 Elsevier Science Ltd. All rights reserved.