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The Influence of Variable Rotor-Stator Interaction on Boundary-Layer Development in an Axial Compressor

[+] Author Affiliations
Achim Griebel, Joerg R. Seume

University of Hannover, Hannover, Germany

Paper No. GT2005-68902, pp. 1459-1471; 13 pages
doi:10.1115/GT2005-68902
From:
  • ASME Turbo Expo 2005: Power for Land, Sea, and Air
  • Volume 6: Turbo Expo 2005, Parts A and B
  • Reno, Nevada, USA, June 6–9, 2005
  • Conference Sponsors: International Gas Turbine Institute
  • ISBN: 0-7918-4730-6 | eISBN: 0-7918-3754-8
  • Copyright © 2005 by ASME

abstract

Boundary layer and free stream measurements were taken at midspan for the first stator of a two-stage low-speed axial research compressor with IGV. The flow pattern on the blade suction surface is described for three different operating points and the transition onset is investigated. Rotor blades were manipulated to exhibit a larger upstream and downstream flow effect and were used to investigate the correlation between downstream wake propagation and upstream potential effect. In this study, these manipulated blades were used to unambiguously identify the potential and wake effects and their propagation in space and time. The wake causes induced transition on the downstream stator. Natural transition occurs between wakes. The amplified potential effect of the manipulated blade propagates upstream even beyond the stator.

Copyright © 2005 by ASME

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