Laminar natural convection in nonrectangular enclosure with and without fins
Author
Source
Issue
Vol. 18, Issue 4 (30 Apr. 2012), pp.499-517, 19 p.
Publisher
University of Baghdad College of Engineering
Publication Date
2012-04-30
Country of Publication
Iraq
No. of Pages
19
Main Subjects
Engineering & Technology Sciences (Multidisciplinary)
Topics
Abstract EN
In the present work, steady, laminar natural convection in nonrectangular enclosures is analyzed numerically with and without fin.
Vertical walls insulated while horizontal walls maintained isothermal at different temperature and the fin was placed on horizontal surface.
The length of fin was equal (B / L = 0.22, 0.44 and 0.66) and thickness of fin was constant.
Various parameters are studied: Rayleigh number (from 104 to 107), Prandtl number (0.7), number of fin change from (1-3) and aspect ratio (H / L = 0.15 to 0.5).
The problem is formulated in terms of the vorticity-stream function procedure.
A numerical solution based on program in Fortran 90 with Tec plot program.
The finite difference method is used.
Streamlines and isotherms are presented for different values of parameters studied.
A Nusselt number correlation is derived by using program (DGA v1.00) and mean Nusselt numbers on hot walls are also calculated at different cases.
The results show the mean Nusselt numbers decreases with increasing aspect ratio (H / L).Also, predictions reveal a decrease in heat transfer in the presence of fins.
The results of the calculations are compared with the previous works and it showed a good agreement.
American Psychological Association (APA)
Jasim, Sajidah Liftah Ghashim. 2012. Laminar natural convection in nonrectangular enclosure with and without fins. Journal of Engineering،Vol. 18, no. 4, pp.499-517.
https://search.emarefa.net/detail/BIM-297010
Modern Language Association (MLA)
Jasim, Sajidah Liftah Ghashim. Laminar natural convection in nonrectangular enclosure with and without fins. Journal of Engineering Vol. 18, no. 4 (Apr. 2012), pp.499-517.
https://search.emarefa.net/detail/BIM-297010
American Medical Association (AMA)
Jasim, Sajidah Liftah Ghashim. Laminar natural convection in nonrectangular enclosure with and without fins. Journal of Engineering. 2012. Vol. 18, no. 4, pp.499-517.
https://search.emarefa.net/detail/BIM-297010
Data Type
Journal Articles
Language
English
Notes
Includes appendices : p. 507-517
Record ID
BIM-297010