Cooling Characteristics of Film-Cooled Turbine Blades PUBLIC ACCESS

[+] Author Affiliations
T. Abe, N. Doi, T. Kawaguchi, T. Yamane

Mitsui Engineering & Shipbuilding Co., Ltd., Tamano, Okayama, Japan

T. Kumagai, T. Yoshida

National Aerospace Laboratory, Chofu, Tokyo, Japan

Paper No. 84-GT-73, pp. V004T09A007; 8 pages
  • ASME 1984 International Gas Turbine Conference and Exhibit
  • Volume 4: Heat Transfer; Electric Power
  • Amsterdam, The Netherlands, June 4–7, 1984
  • Conference Sponsors: International Gas Turbine Institute
  • ISBN: 978-0-7918-7949-8
  • Copyright © 1984 by ASME


A series of experiments was performed to measure the cooling effectiveness of pin-fin type blades applicable to the first-stage blades of the high pressure turbine for the Advanced Gas Turbine of Japan (AGTJ-100A). Actual pin-fin type blades were used in three-dimensional hot cascade tests.

Resulting cooling effectiveness distributions in chordwise direction showed relatively small deviation from the high average value and closely corresponded with analytical predictions. Another major finding was that for film cooling blades, particularly with a shower head film cooling, it is essential in the cascade tests to set the ratio between the coolant and mainstream temperature at values the same as real conditions. This makes it possible to simulate cooling air flow distributions in the blades of high temperature actual turbines using low temperature tests. This is also applicable to vanes with a shower head film cooling.

Copyright © 1984 by ASME
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