An experimental investigation is described that characterizes the convective heat transfer of a heated circular air jet impinging on a flat surface. The radial distributions of the recovery factor, the effectiveness, and the local heat transfer coefficient are presented. The recovery factor and the effectiveness depend on the spacing from jet exit to the impingement plate, but do not depend on jet Reynolds number. The effectiveness does not depend on the temperature difference between the jet and the ambient. A correlation is obtained for the effectiveness. The heat transfer coefficient is independent of the temperature difference between the jet and the ambient if it is defined with the difference between the heated wall temperature and the adiabatic wall temperature.
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Effect of Entrainment on the Heat Transfer to a Heated Circular Air Jet Impinging on a Flat Surface
R. J. Goldstein,
R. J. Goldstein
Mechanical Engineering Department, University of Minnesota, Minneapolis, MN 55455
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K. A. Sobolik,
K. A. Sobolik
Mechanical Engineering Department, University of Minnesota, Minneapolis, MN 55455
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W. S. Seol
W. S. Seol
Mechanical Engineering Department, University of Minnesota, Minneapolis, MN 55455
Search for other works by this author on:
R. J. Goldstein
Mechanical Engineering Department, University of Minnesota, Minneapolis, MN 55455
K. A. Sobolik
Mechanical Engineering Department, University of Minnesota, Minneapolis, MN 55455
W. S. Seol
Mechanical Engineering Department, University of Minnesota, Minneapolis, MN 55455
J. Heat Transfer. Aug 1990, 112(3): 608-611 (4 pages)
Published Online: August 1, 1990
Article history
Received:
February 27, 1989
Revised:
September 18, 1989
Online:
May 23, 2008
Citation
Goldstein, R. J., Sobolik, K. A., and Seol, W. S. (August 1, 1990). "Effect of Entrainment on the Heat Transfer to a Heated Circular Air Jet Impinging on a Flat Surface." ASME. J. Heat Transfer. August 1990; 112(3): 608–611. https://doi.org/10.1115/1.2910430
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