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The Effect of Secondary Air Injection on the Performance of a Transonic Turbine Stage

[+] Author Affiliations
S. Girgis, E. Vlasic, J.-P. Lavoie, S. H. Moustapha

Pratt & Whitney Canada, Inc., Montréal, QC, Canada

Paper No. GT2002-30340, pp. 147-158; 12 pages
doi:10.1115/GT2002-30340
From:
  • ASME Turbo Expo 2002: Power for Land, Sea, and Air
  • Volume 5: Turbo Expo 2002, Parts A and B
  • Amsterdam, The Netherlands, June 3–6, 2002
  • Conference Sponsors: International Gas Turbine Institute
  • ISBN: 0-7918-3610-X | eISBN: 0-7918-3601-0
  • Copyright © 2002 by ASME

abstract

This paper presents results of rig testing of a transonic, single stage turbine with various modifications made to the injection of secondary air into the mainstream. Results show that significant improvements in stage efficiency can be realized by optimizing the injection of upstream disk purge and rotor upstream shroud leakage flow into the mainstream flow. Results of CFD simulations of the rotor upstream disk purge flow test conditions and closely simulated test geometry agree well with test data.

Copyright © 2002 by ASME
Topics: Turbines

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