Muhamad, Hussein and Salamn, Y. and Yusaf, Talal (2006) Experimental investigation of free convection heat transfer with restriction placed at top of a vertical circular tube. In: 8th Biennial ASME Conference on Engineering Systems Design and Analysis, 4-7 July 2006, Italy.
|HTML Citation||EndNote||MODS||Dublin Core||Reference Manager|
Full text not available from this archive.
Official URL: http://www.asmeconferences.org/ESDA06/ConfSpecInfo.cfm
A free convection from the inside surface of vertical circular tube with a uniformly heated surface (constant wall heat flux) was investigated experimentally for laminar air flow in the ranges of RaL from 6.9 × 108 to 5 × 109. The effect of restriction lengths placed at top position of the heated tube on the surface temperature distribution and the local and average heat transfer coefficient were studied. The experimental apparatus consists of aluminum tube with 900mm length and 30mm inside diameter. The entry restrictions were included a circular tube of same diameter as the heated tube but with different lengths of 60cm, 90cm, 120cm, 150cm, and 180cm. It was found that the surface temperature along the tube surface higher values for restriction with length of 180cm and smaller values for the restriction with length of 120cm. The results showed that the local Nux and average Nusselt number Nu were higher values for the restriction with length of 120cm and smaller values for the restriction with length of 180cm. The results obtained are correlated by dimensionless groups as Log L Nu against Log L Ra for each case and proposed a general correlation for all cases.
|Item Type:||Conference or Workshop Item (Commonwealth Reporting Category E) (Paper)|
|Additional Information:||ESDA2006-95229. Permanent restricted access to paper due to publisher copyright restrictions. This paper is Copyright © 2006 by ASME.|
|Uncontrolled Keywords:||Experimental free convection, entrance restriction top position, vertical circular tube|
|Fields of Research (FOR2008):||09 Engineering > 0902 Automotive Engineering > 090202 Automotive Engineering Materials|
09 Engineering > 0915 Interdisciplinary Engineering > 091502 Computational Heat Transfer
|Subjects:||290000 Engineering and Technology > 290400 Automotive Engineering > 290401 Automotive Engineering|
290000 Engineering and Technology > 290500 Mechanical and Industrial Engineering
|Socio-Economic Objective (SEO2008):||UNSPECIFIED|
|Deposited On:||11 Oct 2007 10:47|
|Last Modified:||12 Aug 2011 11:37|
Archive Staff Only: edit this record