Entrainment Effects on Impingement Heat Transfer: Part II—Local Heat Transfer Measurements

[+] Author and Article Information
B. R. Hollworth

Mechanical and Industrial Engineering Department, Clarkson University, Potsdam, NY 13676

L. R. Gero

Mechanical Engineering Department, Rensselaer Polytechnic Institute, Troy, NY 12181

J. Heat Transfer 107(4), 910-915 (Nov 01, 1985) (6 pages) doi:10.1115/1.3247520 History: Received May 21, 1984; Online October 20, 2009


Convective heat transfer was measured for a heated axisymmetric air jet impinging on a flat surface. It was found that the local heat transfer coefficient does not depend explicitly upon the temperature mismatch between the jet fluid and the ambient fluid if the convection coefficient is defined in terms of the difference between the local recovery temperature and target surface temperature. In fact, profiles of local heat transfer coefficients defined in this manner were found to be identical to those measured for isothermal impinging jets.

Copyright © 1985 by ASME
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