Hydrodynamics and Heat Exchange With Wall Jet Cooling of Gas Turbine Blade Internal Spaces PUBLIC ACCESS

[+] Author Affiliations
A. V. Soudarev

Research & Technological Institute for Power Engineering, St. Petersburg, Russia

B. V. Soudarev, N. N. Medvedev, V. V. Medvedev

The Ocean State Technology University, St. Petersburg, Russia

V. B. Soudarev

Central Boiler-Turbine Institute, St. Petersburg, Russia

Paper No. 96-GT-526, pp. V004T09A057; 6 pages
  • ASME 1996 International Gas Turbine and Aeroengine Congress and Exhibition
  • Volume 4: Heat Transfer; Electric Power; Industrial and Cogeneration
  • Birmingham, UK, June 10–13, 1996
  • Conference Sponsors: International Gas Turbine Institute
  • ISBN: 978-0-7918-7875-0
  • Copyright © 1996 by ASME


Evaluation of wall jet cooling inside of a gas turbine blade was accomplished. The wall jets are produced by confining the internal flow so that it must pass through narrow gaps and along the blade skin inner surfaces. Flow structure of the jets was revealed using polarization-optical visualization and laser Doppler anemometry. On the basis of analysis of the photos and of the flow turbulence spectra, the jet’s external boundary was identified. Diagrams of velocities, given in a non-dimensional form, for both the early development and downstream areas of the jet were obtained. Similarity solutions for local convective heat transfer to the confined wall jet were provided. The computational results agree well with the experimental data.

Copyright © 1996 by ASME
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