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Three-Dimensional Flow Predictions in Axial-Flow Turbine Cascades PUBLIC ACCESS

[+] Author Affiliations
O. Niestroj, P. M. Came

PCA Engineers, Lincoln, United Kingdom

Paper No. 98-GT-325, pp. V001T01A087; 9 pages
doi:10.1115/98-GT-325
From:
  • ASME 1998 International Gas Turbine and Aeroengine Congress and Exhibition
  • Volume 1: Turbomachinery
  • Stockholm, Sweden, June 2–5, 1998
  • Conference Sponsors: International Gas Turbine Institute
  • ISBN: 978-0-7918-7862-0
  • Copyright © 1998 by ASME

abstract

Numerical investigations of the three-dimensional flowfields in a turbine linear cascade and in an annular, non-rotating turbine cascade have been carried out. Both cascades were the subjects of published experimental studies. In the experimental set-up for the annular cascade the hub wall upstream of the blades could be either stationary or rotating so that a collateral or a skewed inlet boundary layer could be achieved.

The results of the computations have been compared with the experimental data. Total pressure loss coefficients and exit flow angles have been studied and in both cascades the predicted secondary flow effects are in good agreement with the experimental results. Two-dimensional contour plots in the measurement planes and pitchwise-averaged flow angle comparisons illustrate the accuracy of the computations.

Copyright © 1998 by ASME
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