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RESEARCH PAPERS: Forced Convection

Heat Transfer From a Circular Cylinder at Low Reynolds Numbers

[+] Author and Article Information
V. N. Kurdyumov

Universidad Politecnica de Madrid, E.T.S.I. Aeronáuticos, Plaza Cardenal Cisneros 3, 28040 Madrid, Spain

E. Fernández

Instituto Nacional de Técnica Aeroespacial, División de Propulsión, Torrejón de Ardoz, Spain

J. Heat Transfer 120(1), 72-75 (Feb 01, 1998) (4 pages) doi:10.1115/1.2830067 History: Received March 10, 1997; Revised November 03, 1997; Online January 07, 2008

Abstract

A correlation formula, Nu = W0 (Re)Pr1/3 + W1 (Re), that is valid in a wide range of Reynolds and Prandtl numbers has been developed based on the asymptotic expansion for Pr → ∞ for the forced heat convection from a circular cylinder. For large Prandtl numbers, the boundary layer theory for the energy equation is applied and compared with the numerical solutions of the full Navier Stokes equations for the flow field and energy equation. It is shown that the two-terms asymptotic approximation can be used to calculate the Nusselt number even for Prandtl numbers of order unity to a high degree of accuracy. The formulas for coefficients W0 and W1 , are provided.

Copyright © 1998 by The American Society of Mechanical Engineers
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