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A Correlation Approach to Predicting Film Cooled Turbine Vane Heat Transfer

[+] Author Affiliations
Robert J. Boyle

NASA Glenn Research Center, Cleveland, OH

Ali A. Ameri

The Ohio State University; NASA Glenn Research Center, Cleveland, OH

Paper No. GT2010-23597, pp. 1841-1856; 16 pages
doi:10.1115/GT2010-23597
From:
  • ASME Turbo Expo 2010: Power for Land, Sea, and Air
  • Volume 4: Heat Transfer, Parts A and B
  • Glasgow, UK, June 14–18, 2010
  • Conference Sponsors: International Gas Turbine Institute
  • ISBN: 978-0-7918-4399-4 | eISBN: 978-0-7918-3872-3
  • Copyright © 2010 by ASME

abstract

A correlation is developed to predict film cooling effectiveness for turbine vanes. Heat transfer data from a number of different sources is examined to determine if the correlation satisfactorily predicts film cooled vane heat transfer data. Predictions are made for a range of variables encountered in these data. The primary purpose of this work is to demonstrate how well film cooling correlations, developed from large scale experiments, can be utilized to predict turbine blade heat transfer. The correlation that is developed accounts for blowing ratio, Reynolds number, turbulence intensity, and surface curvature. A second purpose of this work is to illustrate the importance of comparing predictions with data at a sufficiently high Reynolds number to be applicable to first stage turbine vanes of future engines with their increased overall pressure ratios.

Copyright © 2010 by ASME

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