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The effectt of the separation distance of the external body on natural convection reduction from a horizontal circular cylinder

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Bibliographic Details
Main Author: Hussein, A. Mohammed
Other Authors: hussein@uniten.edu.my
Format: Article
Language:English
Published: The Institution of Engineers, Malaysia 2011
Subjects:
External body
Horizontal circular cylinder
Natural convection reduction
Separation distance effect
Online Access:http://dspace.unimap.edu.my/xmlui/handle/123456789/13740
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spelling my.unimap-137402011-09-14T08:28:08Z The effectt of the separation distance of the external body on natural convection reduction from a horizontal circular cylinder Hussein, A. Mohammed hussein@uniten.edu.my External body Horizontal circular cylinder Natural convection reduction Separation distance effect Link to publisher's homepage at http://www.myiem.org.my/ presence of an external body in the way of the air on the heat transfer results. The experimental setup consists of an aluminum cylinder as test section with 28 mm inside diameter and 450 mm heated length, which is subjected to a constant wall heat flux boundary condition. The Rayleigh number in this investigation was ranged from 1.08*105 to 5.8*106. Four external bodies have been used with different separation distances parameter (L/D) 1.155, 1.44, 1.77 and 2.0. The results have shown a considerable percentage of heat transfer reduction when the separation distance (L) is greater than 1/3 of the cylinder diameter while the heat transfer process suffers appreciable reduction as the separation distance (L) is less than 1/3 of the cylinder diameter. It was concluded that there is no an appreciable effect on the heat transfer reduction when the separation distance parameter (L/D) is greater than 1.77. The average Nusselt numbers were correlated with the Rayleigh numbers with empirical correlations. The results were compared with the results of a free horizontal cylinder without external body presence. 2011-09-14T08:28:08Z 2011-09-14T08:28:08Z 2008-03 Article The Journal of the Institution of Engineers, Malaysia, vol. 69(1), 2008, pages 26-31 0126-513X http://www.myiem.org.my/content/iem_journal_2008-179.aspx http://hdl.handle.net/123456789/13740 en The Institution of Engineers, Malaysia
institution Universiti Malaysia Perlis
building UniMAP Library
collection Institutional Repository
continent Asia
country Malaysia
content_provider Universiti Malaysia Perlis
content_source UniMAP Library Digital Repository
url_provider http://dspace.unimap.edu.my/
language English
topic External body
Horizontal circular cylinder
Natural convection reduction
Separation distance effect
spellingShingle External body
Horizontal circular cylinder
Natural convection reduction
Separation distance effect
Hussein, A. Mohammed
The effectt of the separation distance of the external body on natural convection reduction from a horizontal circular cylinder
description Link to publisher's homepage at http://www.myiem.org.my/
author2 hussein@uniten.edu.my
author_facet hussein@uniten.edu.my
Hussein, A. Mohammed
format Article
author Hussein, A. Mohammed
author_sort Hussein, A. Mohammed
title The effectt of the separation distance of the external body on natural convection reduction from a horizontal circular cylinder
title_short The effectt of the separation distance of the external body on natural convection reduction from a horizontal circular cylinder
title_full The effectt of the separation distance of the external body on natural convection reduction from a horizontal circular cylinder
title_fullStr The effectt of the separation distance of the external body on natural convection reduction from a horizontal circular cylinder
title_full_unstemmed The effectt of the separation distance of the external body on natural convection reduction from a horizontal circular cylinder
title_sort effectt of the separation distance of the external body on natural convection reduction from a horizontal circular cylinder
publisher The Institution of Engineers, Malaysia
publishDate 2011
url http://dspace.unimap.edu.my/xmlui/handle/123456789/13740
_version_ 1643790954224680960
score 13.222552

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