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Film Cooling Jet Aerodynamics for a Pipe and a Converging Nozzle Injection Hole

[+] Author Affiliations
Jun Sasahara, Takaaki Shizawa, Shinji Honami

Science University of Tokyo, Tokyo, Japan

Yukiko Suzuki

Transportation Bureau of Tokyo Metropolitan Government, Tokyo, Japan

Shigeru Tanaka

JGC CORPORATION, Yokohama, Kanagawa, Japan

Paper No. 2000-GT-0297, pp. V003T01A098; 7 pages
  • ASME Turbo Expo 2000: Power for Land, Sea, and Air
  • Volume 3: Heat Transfer; Electric Power; Industrial and Cogeneration
  • Munich, Germany, May 8–11, 2000
  • Conference Sponsors: International Gas Turbine Institute
  • ISBN: 978-0-7918-7856-9
  • Copyright © 2000 by ASME


This paper presents the experimental study of film cooling jet aerodynamics for a pipe and a converging nozzle injection hole. The pipe jet has a fully developed velocity profile, and the nozzle jet has a top-hat one at the exit of the injection hole. The film cooling jet is injected into a turbulent boundary layer on a flat plate with 30° inclination angle. The mass flux ratio of the cooling jet to the primary flow is set at 0.8 and 1.2. Three components of mean velocity, vorticity and turbulent kinetic energy are measured using an X-array hot wire anemometer. The kidney vortex from the pipe jet is located closer to the wall than those from the nozzle jet. A tab is also installed at the exit of an injection hole to prevent the primary flow from convoluting. The effect of tab on the pipe jet is explicit.

Copyright © 2000 by ASME



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