Three-Dimensional Natural Convection From Vertical Heated Plates With Adjoining Cool Surfaces

[+] Author and Article Information
B. W. Webb

Department of Mechanical Engineering, Brigham Young University, Provo, UT 84602

T. L. Bergman

Department of Mechanical Engineering, The University of Texas at Austin, Austin, TX 78712

J. Heat Transfer 114(1), 115-120 (Feb 01, 1992) (6 pages) doi:10.1115/1.2911235 History: Received February 19, 1991; Revised May 23, 1991; Online May 23, 2008


Natural convection in an enclosure with a uniform heat flux on two vertical surfaces and constant temperature at the adjoining walls has been investigated both experimentally and theoretically. The thermal boundary conditions and enclosure geometry render the buoyancy-induced flow and heat transfer inherently three dimensional. The experimental measurements include temperature distributions of the isoflux walls obtained using an infrared thermal imaging technique, while the three-dimensional equations governing conservation of mass, momentum, and energy were solved using a control volume-based finite difference scheme. Measurements and predictions are in good agreement and the model predictions reveal strongly three-dimensional flow in the enclosure, as well as high local heat transfer rates at the edges of the isoflux wall. Predicted average heat transfer rates were correlated over a range of the relevant dimensionless parameters.

Copyright © 1992 by The American Society of Mechanical Engineers
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