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RESEARCH PAPERS

Internal Laminar Heat Transfer With Gas-Property Variation

[+] Author and Article Information
T. B. Swearingen

Mechanical Engineering Department, Kansas State University, Manhattan, Kan.

D. M. McEligot

Energy, Mass and Momentum Transfer Laboratory, Aerospace and Mechanical Engineering Department, The University of Arizona, Tucson, Ariz.

J. Heat Transfer 93(4), 432-440 (Nov 01, 1971) (9 pages) doi:10.1115/1.3449842 History: Received October 23, 1970; Online August 11, 2010

Abstract

The results of a numerical investigation of internal laminar heat transfer to a gas with temperature-dependent properties are reported. In this investigation the authors obtained numerical solutions to the coupled partial differential equations of continuity, energy, momentum, and integral continuity describing the two-dimensional flow of perfect gas between heated parallel plates. A sequence of numerical solutions was obtained for the case of constant wall heat flux with a fully developed velocity profile at the start of the heated section and pure forced convection. The results may be summarized by

Nu=Nuconst. prop.
  +0.024(Q+)0.3(Gzm)0.75
f·Rem=24(Twall/Tbulk)
where the subscript “m” refers to properties evaluated at the local mixed-mean (or bulk) temperature.

Copyright © 1971 by ASME
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