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Numerical Studies on Natural Convection Heat Losses from Open Cubical Cavities
Author
Source
Issue
Vol. 2013, Issue 2013 (31 Dec. 2013), pp.1-9, 9 p.
Publisher
Hindawi Publishing Corporation
Publication Date
2013-03-06
Country of Publication
Egypt
No. of Pages
9
Main Subjects
Abstract EN
The natural convection heat losses occurring from cubical open cavities are analysed in this paper.
Open cubical cavities of sides 0.1 m, 0.2 m, 0.25 m, 0.5 m, and 1 m with constant temperature back wall boundary conditions and opening ratio of 1 are studied.
The Fluent CFD software is used to analyse the three-dimensional (3D) cavity models.
The studies are carried out for cavities with back wall temperatures between 35°C and 100°C.
The effect of cavity inclination on the convective loss is analysed for angles of 0° (cavity facing sideways), 30°, 45°, 60°, and 90° (cavity facing vertically downwards).
The Rayleigh numbers involved in this study range between 4.5 × 105 and 1.5 × 109.
The natural convection loss is found to increase with an increase in back wall temperature.
The natural convection loss is observed to decrease with an increase in cavity inclination; the highest convective loss being at 0° and the lowest at 90° inclination.
This is observed for all cavities analysed here.
Nusselt number correlations involving the effect of Rayleigh number and the cavity inclination angle have been developed from the current studies.
These correlations can be used for engineering applications such as electronic cooling, low- and medium-temperature solar thermal systems, passive architecture, and also refrigeration systems.
American Psychological Association (APA)
Prakash, M.. 2013. Numerical Studies on Natural Convection Heat Losses from Open Cubical Cavities. Journal of Engineering،Vol. 2013, no. 2013, pp.1-9.
https://search.emarefa.net/detail/BIM-463285
Modern Language Association (MLA)
Prakash, M.. Numerical Studies on Natural Convection Heat Losses from Open Cubical Cavities. Journal of Engineering No. 2013 (2013), pp.1-9.
https://search.emarefa.net/detail/BIM-463285
American Medical Association (AMA)
Prakash, M.. Numerical Studies on Natural Convection Heat Losses from Open Cubical Cavities. Journal of Engineering. 2013. Vol. 2013, no. 2013, pp.1-9.
https://search.emarefa.net/detail/BIM-463285
Data Type
Journal Articles
Language
English
Notes
Includes bibliographical references
Record ID
BIM-463285