Laminar Natural Convection About Vertical Plates With Oscillatory Surface Temperature

[+] Author and Article Information
J. W. Yang

Department of Mechanical Engineering, State University of New York at Buffalo, Buffalo, N. Y.

C. Scaccia

Union Carbide Corp., Linde Division, Tonawanda, N. Y.

J. Goodman

Technion—Israel Institute of Technology, Technion, Israel

J. Heat Transfer 96(1), 9-14 (Feb 01, 1974) (6 pages) doi:10.1115/1.3450149 History: Received February 16, 1973; Online August 11, 2010


The characteristics of laminar natural convection about a vertical plate with periodically changing surface temperature have been studied by the finite-difference method. The effects of the amplitude and period of the surface temperature oscillation on the instantaneous and time-average Nusselt numbers, temperature and velocity profiles are demonstrated by several examples. High amplitude and a large range of frequency of the oscillation were considered in these examples. The time-wise variation of the fluid temperature in the inner region adjacent to the surface produces back heat flow at high amplitude, high frequency, and at high local Grashof number.

Copyright © 1974 by ASME
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