An Analytical Mixing Model for Buoyant Jet Injected Into Pipe Flow

[+] Author and Article Information
J. H. Kim

Electric Power Research Institute, Palo Alto, CA 94303

J. Heat Transfer 107(3), 630-635 (Aug 01, 1985) (6 pages) doi:10.1115/1.3247470 History: Received July 03, 1984; Online October 20, 2009


An analytical model based on jet trajectory, jet diffusion layer, and flow establishment which predicts mixing of a cold jet injected at an angle into a hot crossflow in a horizontal pipe is presented. The impetus of the present study is to provide a method for calculating fluid temperature when a cold jet is injected into a pipe carrying a hot fluid, without recourse to a sophisticated multidimensional computer program. Such a method is urgently needed to resolve the so-called pressurized thermal shock issue in nuclear industry. The model prediction is compared with representative cases of existing test data, and is shown to predict the temperature distribution reasonably well.

Copyright © 1985 by ASME
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