Conjugate numerical solution of laminar forced convection for cross-flow over a cylinder with external longitudinal fins of finite thickness has been carried out. The rate of heat transfer from the fins increases and that from the free area of the cylinder marginally decreases with an increase in thickness, length, and number of fins. The rate of heat transfer from the fins alone is usually much higher than that from the cylinder surface. As a consequence, the net result of these two opposing effects is an increase in the total heat transfer over that of the smooth cylinder, the amount increasing with an increase in thickness, length, and number of fins but with diminishing returns. The fins are more effective at high Re values than at low ones.
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September 2008
This article was originally published in
Journal of Heat Transfer
Technical Briefs
Laminar Forced Convection for Flow Across a Cylinder With Longitudinal Fins of Finite Thickness
S. C. Haldar,
S. C. Haldar
Department of Mechanical and Manufacturing Engineering, Faculty of Engineering,
e-mail: schaldar@rediffmail.com
University of the West Indies
, St. Augustine, Trinidad, Trinidad and Tobago
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G. S. Kochhar,
G. S. Kochhar
Department of Mechanical and Manufacturing Engineering, Faculty of Engineering,
University of the West Indies
, St. Augustine, Trinidad, Trinidad and Tobago
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K. Manohar
K. Manohar
Department of Mechanical and Manufacturing Engineering, Faculty of Engineering,
University of the West Indies
, St. Augustine, Trinidad, Trinidad and Tobago
Search for other works by this author on:
S. C. Haldar
Department of Mechanical and Manufacturing Engineering, Faculty of Engineering,
University of the West Indies
, St. Augustine, Trinidad, Trinidad and Tobagoe-mail: schaldar@rediffmail.com
G. S. Kochhar
Department of Mechanical and Manufacturing Engineering, Faculty of Engineering,
University of the West Indies
, St. Augustine, Trinidad, Trinidad and Tobago
K. Manohar
Department of Mechanical and Manufacturing Engineering, Faculty of Engineering,
University of the West Indies
, St. Augustine, Trinidad, Trinidad and TobagoJ. Heat Transfer. Sep 2008, 130(9): 094502 (4 pages)
Published Online: July 10, 2008
Article history
Received:
June 1, 2007
Revised:
February 15, 2008
Published:
July 10, 2008
Citation
Haldar, S. C., Kochhar, G. S., and Manohar, K. (July 10, 2008). "Laminar Forced Convection for Flow Across a Cylinder With Longitudinal Fins of Finite Thickness." ASME. J. Heat Transfer. September 2008; 130(9): 094502. https://doi.org/10.1115/1.2946477
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