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RESEARCH PAPERS

Heat Transfer Coefficient in Ducts With Constant Wall Temperature

[+] Author and Article Information
A. Haji-Sheikh, M. Mashena, M. J. Haji-Sheikh

Mechanical Engineering Department, The University of Texas at Arlington, Arlington, Tex. 76019

J. Heat Transfer 105(4), 878-883 (Nov 01, 1983) (6 pages) doi:10.1115/1.3245676 History: Received October 21, 1982; Online October 20, 2009

Abstract

An analytical method for the numerical calculation of the heat transfer coefficient in arbitrarily shaped ducts with constant wall temperature at the boundary is presented. The flow is considered to be laminar and fully developed, both thermally and hydrodynamically. The method presented herein makes use of Galerkin-type functions for computation of the Nusselt number. This method is applied to circular pipes and ducts with rectangular, isosceles triangular, and right triangular cross sections. A three-term or even a two-term solution yields accurate solutions for circular ducts. The situation is similar for right triangular ducts with two equal sides. However, for narrower ducts, a larger number of terms must be used.

Copyright © 1983 by ASME
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