Impingement Cooling Performance in Gas Turbine Airfoils Including Effects of Leading Edge Sharpness

[+] Author and Article Information
D. E. Metzger, R. T. Baltzer, C. W. Jenkins

Department of Mechanical Engineering, Arizona State University, Tempe, Ariz.

J. Eng. Power 94(3), 219-225 (Jul 01, 1972) (7 pages) doi:10.1115/1.3445676 History: Received November 16, 1971; Online July 14, 2010


An experimental study of the heat transfer characteristics of impingement into cavities which model the cooled leading edges of gas turbine engine airfoils is presented. The study includes both two-dimensional slot jets and single lines of evenly-spaced circular jets. For broad cylindrical cavities correlations are given for the maximum heat transfer rates attainable with optimum positioning of the jet nozzle with respect to the cooled surface. For elongated narrow cavities heat transfer rates relative to these maximum values are presented for a variety of cavity shapes.

Copyright © 1972 by ASME
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