Transient Behavior of a Radiatively Heated Double-Diffusive System

[+] Author and Article Information
T. L. Bergman, F. P. Incropera, R. Viskanta

Heat Transfer Laboratory, School of Mechanical Engineering, Purdue University, West Lafayette, Indiana 47907

J. Heat Transfer 108(2), 317-322 (May 01, 1986) (6 pages) doi:10.1115/1.3246922 History: Received January 28, 1985; Online October 20, 2009


A mathematical model is developed to predict the transient response of a salt-stratified, double-diffusive system which is destabilized by radiation absorption at its bottom boundary. An accepted k-ε turbulence model is used to predict the response of the salt-stratified solution to bottom heating, and a discrete ordinates solution of the radiative transfer equation is used to predict the radiation field. Verification is achieved through comparisons of predicted and measured temperature distributions, which have been previously reported. Parametric calculations are performed to investigate the influence of the radiation source temperature, bottom surface reflectivity, optical extinction coefficient, and top surface boundary condition on system response.

Copyright © 1986 by ASME
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