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Local Cooling Effectiveness Distribution of an Integrated Impingement and Pin Fin Cooling Configuration

[+] Author Affiliations
Chiyuki Nakamata

Ishikawajima-Harima Heavy Industries Company, Ltd., Tokyo, Japan

Fujio Mimura, Masahiro Matsushita, Takashi Yamane, Yoshitaka Fukuyama

Japan Aerospace Exploration Agency, Tokyo, Japan

Toyoaki Yoshida

Tokyo University of Agriculture and Technology, Tokyo, Japan

Paper No. GT2007-27020, pp. 23-34; 12 pages
  • ASME Turbo Expo 2007: Power for Land, Sea, and Air
  • Volume 4: Turbo Expo 2007, Parts A and B
  • Montreal, Canada, May 14–17, 2007
  • Conference Sponsors: International Gas Turbine Institute
  • ISBN: 0-7918-4793-4 | eISBN: 0-7918-3796-3
  • Copyright © 2007 by ASME


An integrated impingement and pin-fin cooling configuration is investigated experimentally. Temperature measurements have been performed for several test pieces with various pin/hole arrangements to clarify an influence of pin/hole arrangements on cooling effectiveness. The experiment has been conducted with 673K combustion gas flow and room temperature cooling air. Reynolds number of combustion gas flow is 380000 and Reynolds number of cooling air flow is in the range from 5000 to 30000. An infrared camera is used to measure a temperature distribution on a specimen surface. The area-averaged cooling effectiveness and the local cooling effectiveness are evaluated for each specimen and compared each other. There are evidences of the existence of pins on the local cooling effectiveness at the exact location of those. But the local cooling effectiveness are independent of the hole arrangement.

Copyright © 2007 by ASME
Topics: Cooling



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