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RESEARCH PAPERS

Linearization of Natural Convection From a Vertical Plate With Arbitrary Heat-Flux Distributions

[+] Author and Article Information
S. Lee, M. M. Yovanovich

Microelectronics Heat Transfer Laboratory, Department of Mechanical Engineering, University of Waterloo, Waterloo, Ontario, Canada

J. Heat Transfer 114(4), 909-916 (Nov 01, 1992) (8 pages) doi:10.1115/1.2911900 History: Received August 01, 1991; Revised April 01, 1992; Online May 23, 2008

Abstract

A simple model is developed to predict the heat transfer characteristics of a vertical plate with arbitrarily prescribed surface heat-flux variations under a buoyancy-driven flow. The analysis is based on the linearized approximations to the boundary layer form of the conservation equations. Explicit, closed-form solutions for the surface temperature of the plate and fluid temperature distributions are obtained for the full range of Prandtl numbers. Surface heat-flux variations of discontinuous as well as continuous types are examined, and the results are compared with air data obtained by using various solution methods including numerical simulations. It is shown that the present predictions are in excellent agreement with those of other methods that are capable of producing exact solutions.

Copyright © 1992 by The American Society of Mechanical Engineers
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