Analysis of Buoyant Surface Jets

[+] Author and Article Information
M. A. Shirazi

Corvallis Environmental Research Laboratory, U.S. Environmental Protection Agency, Corvallis, Oreg.

L. R. Davis

Oregon State University, Corvallis, Oreg.

J. Heat Transfer 98(3), 367-372 (Aug 01, 1976) (6 pages) doi:10.1115/1.3450562 History: Online August 11, 2010


To obtain improved prediction of heated plume characteristics from a surface jet, an integral analysis computer model was modified and a comprehensive set of field and laboratory data available from the literature was gathered, analyzed, and correlated for estimating the magnitude of certain coefficients that are normally introduced in these analyses to achieve closure. The parameters so estimated include the coefficients for entrainment, turbulent exchange, drag, and shear. Since there appeared considerable scatter in the data, even after appropriate subgrouping to narrow the influence of various flow conditions on the data, only statistical procedures could be applied to find the best fit. This and other analyses of its type have been widely used in industry and government for the prediction of thermal plumes from steam power plants. Although the present model has many shortcomings, a recent independent and exhaustive assessment of such predictions revealed that in comparison with other analyses of its type the present analysis predicts the field situations more successfully.

Copyright © 1976 by ASME
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