Effects of Cooling Films on the Heat Transfer Coefficient on a Flat Plate With Zero Mainstream Pressure Gradient

[+] Author and Article Information
N. Hay, D. Lampard, C. L. Saluja

Department of Mechanical Engineering, University of Nottingham, Nottingham, NG7 2RD, U.K.

J. Eng. Gas Turbines Power 107(1), 105-110 (Jan 01, 1985) (6 pages) doi:10.1115/1.3239667 History: Received December 27, 1983; Online October 15, 2009


The influence of injection of cooling films through a row of holes on the heat transfer coefficient on a flat plate is investigated for a range of mass flux ratio using a heat-mass transfer analogy. Injection angles of 35 deg and 90 deg are covered. The experimental technique employed uses a swollen polymer surface and laser holographic interferometry. The results presented show the change in local heat transfer coefficient over the no-injection values at the centerline and off-centerline locations for various streamwise stations. The effect of injection on laterally averaged heat transfer coefficients is also assessed.

Copyright © 1985 by ASME
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