A Quasi Unsteady Study on Wake Interaction of Turbine Stator and Rotor Cascades PUBLIC ACCESS

[+] Author Affiliations
Atsumasa Yamamoto

National Aerospace Laboratory, Tokyo, Japan

Rin-ichi Murao, Yuji Suzuki, Yoshihiro Aoi

Aoyama Gakuin University, Tokyo, Japan

Paper No. 94-GT-138, pp. V001T01A048; 10 pages
  • ASME 1994 International Gas Turbine and Aeroengine Congress and Exposition
  • Volume 1: Turbomachinery
  • The Hague, Netherlands, June 13–16, 1994
  • Conference Sponsors: International Gas Turbine Institute
  • ISBN: 978-0-7918-7883-5
  • Copyright © 1994 by ASME


Detailed flow measurements were made to study cascade interaction of turbine stator and rotor, by using two linear cascades installed in series. The upstream cascade was traversed at several times in the cascade pitchwise direction in order to change the relative location between the two cascades, and measurements were made in the downstream cascade. The result shows that the net total pressure loss generated in the downstream cascade becomes maximum when wakes of the upstream cascade pass the suction side of the downstream cascade passage, while the tip leakage loss generated in the downstream cascade does not change with the relative location th cascades. The upstreaof born cascade wakes interact with the secondary flows, and most strongly with the endwall flow in the downstream cascade passage, making the loss distributions in both cascades fairly unsteady.

Copyright © 1994 by ASME
Topics: Wakes , Rotors , Turbines , Stators
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