Studies of Full-Coverage Film Cooling: Part 2 — Measurement of Local Heat Transfer Coefficient FREE

[+] Author Affiliations
M. Kumada, M. Hirata

University of Gifu, Gifu, Japan

N. Kasagi

Universityè Tokyo, Tokyo, Japan

Paper No. 81-GT-38, pp. V003T09A002; 8 pages
  • ASME 1981 International Gas Turbine Conference and Products Show
  • Volume 3: Heat Transfer; Electric Power
  • Houston, Texas, USA, March 9–12, 1981
  • Conference Sponsors: International Gas Turbine Institute
  • ISBN: 978-0-7918-7963-4
  • Copyright © 1981 by ASME


The local heat transfer coefficient of full-coverage film-cooled wall has been measured by using the law of analogy to mass transfer. For this experiment, the technique of sublimation of naphthalene was used. The geometric shape of FCFC plate and the experimental condition were the same as those in Part 1. From these experiments, the effects of the mass flux ratio and non-dimensional injection wall temperature ratio on the local Stanton number are made clear and it is confirmed experimentally that the local Stanton number is a linear function of non-dimensional temperature ratio as expected from the analysis. Furthermore, the local heat transfer coefficient on the backside surface has been obtained and a technique for the improvement of cooling effectiveness is discussed.

Copyright © 1981 by ASME
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