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Grid Orthogonality Effects on Predicted Turbine Midspan Heat Transfer and Performance FREE

[+] Author Affiliations
R. J. Boyle

NASA Lewis Research Center, Cleveland, OH

A. A. Ameri

University of Kansas, Lawrence, KS

Paper No. 94-GT-123, pp. V004T09A016; 11 pages
doi:10.1115/94-GT-123
From:
  • ASME 1994 International Gas Turbine and Aeroengine Congress and Exposition
  • Volume 4: Heat Transfer; Electric Power; Industrial and Cogeneration
  • The Hague, Netherlands, June 13–16, 1994
  • Conference Sponsors: International Gas Turbine Institute
  • ISBN: 978-0-7918-7886-6
  • Copyright © 1994 by ASME

abstract

The effect of five different C type grid geometries on the predicted heat transfer and aerodynamic performance of a turbine stator is examined. Predictions were obtained using two flow analysis codes. One was a finite difference analysis, and the other was a finite volume analysis. Differences among the grids in terms of heat transfer and overall performance were small. The most significant difference among the five grids occurred in the prediction of pitchwise variation in total pressure. There was consistency between results obtained with each of the flow analysis codes when the same grid was used. A grid generating procedure in which the viscous grid is embedded within an inviscid type grid resulted in the best overall performance.

Copyright © 1994 by ASME
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