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RESEARCH PAPERS

Heat Transfer and Skin Friction for Turbulent Boundary-Layer Flow Longitudinal to a Circular Cylinder

[+] Author and Article Information
E. M. Sparrow

Heat Transfer Laboratory, University of Minnesota, Minneapolis, Minn.

E. R. G. Eckert, W. J. Minkowycz

Heat Transfer Laboratory, University of Minnesota

J. Appl. Mech 30(1), 37-43 (Mar 01, 1963) (7 pages) doi:10.1115/1.3630103 History: Received August 28, 1961; Online September 16, 2011

Abstract

An analysis has been carried out for the turbulent velocity and thermal boundary layers which develop along a cylinder whose axis is parallel to the free-stream flow. Local and average friction factors are calculated as functions of the length Reynolds number Rex for various cylinder sizes (characterized, by the radius Reynolds number Rer0 ). For corresponding flow conditions, the friction factor for a cylinder always exceeds that for the flat plate. Local heat-transfer coefficients corresponding to the case of uniform wall heat flux have been obtained for Prandtl numbers of 0.7 and 5. As with the friction factors, the cylinder heat-transfer coefficients exceed those for the flat plate. This effect of the cylindrical geometry on heat transfer diminishes with increasing Prandtl number.

Copyright © 1963 by ASME
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