Interaction of Upstream Flow Distortions With High Number Cascades PUBLIC ACCESS

[+] Author Affiliations
G. W. Englert

National Aeronautics and Space Administration, Lewis Research Center, Cleveland, OH

Paper No. 82-GT-137, pp. V001T01A057; 16 pages
  • ASME 1982 International Gas Turbine Conference and Exhibit
  • Volume 1: Turbomachinery
  • London, England, April 18–22, 1982
  • Conference Sponsors: International Gas Turbine Institute
  • ISBN: 978-0-7918-7956-6
  • Copyright © 1982 by ASME


This analytical study models features of the interaction of flow distortions, such as gusts and wakes, with blade rows of advance type fans and compressors having high tip Mach numbers. A typical disturbance is described, at afar upstream location, in three orthogonal spatial coordinates by a double Fourier series. It is convected at supersonic velocity relative to a linear cascade described as an unrolled annulus. Details of interaction of the disturbance with an in-passage shock are discussed. Influences of amplitude, wave length, and phase of the disturbance on lifts and moments of cascade configurations are presented.

Copyright © 1982 by ASME
Topics: Flow (Dynamics)
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