The Effect of Entrainment Temperature on Jet Impingement Heat Transfer

[+] Author and Article Information
S. A. Striegl

Westinghouse Electric Corporation, Idaho Falls, Idaho 83401

T. E. Diller

Mechanical Engineering Department, Virginia Polytechnic Institute and State University, Blacksburg, Va. 24061

J. Heat Transfer 106(1), 27-33 (Feb 01, 1984) (7 pages) doi:10.1115/1.3246655 History: Received June 20, 1982; Online October 20, 2009


An experimental study was done to determine the effect of entrainment temperature on the local heat transfer rates to single and multiple, plane, turbulent impinging air jets. To determine the effect of entrainment of the surrounding fluid, the single jet issued into an environment at a temperature which was varied between the initial temperature of the jet and the temperature of the heated impingement plate. An analytical model was used to correlate the measured heat transfer rate to a single jet. The effect of the entrainment temperature in a single jet was then used to analyze the effect of entrainment from the recirculation region between the jets of a jet array. Using the measured temperature in the recirculation region to include the effect of entrainment, the single jet correlations were successfully applied to multiple jets.

Copyright © 1984 by ASME
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