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Inlet Skew and the Growth of Secondary Losses and Vorticity in a Turbine Cascade PUBLIC ACCESS

[+] Author Affiliations
J. A. Walsh

Logica Space and Defence Systems Ltd., London

D. G. Gregory-Smith

University of Durham, Durham

Paper No. 89-GT-65, pp. V001T01A036; 11 pages
doi:10.1115/89-GT-65
From:
  • ASME 1989 International Gas Turbine and Aeroengine Congress and Exposition
  • Volume 1: Turbomachinery
  • Toronto, Ontario, Canada, June 4–8, 1989
  • Conference Sponsors: International Gas Turbine Institute
  • ISBN: 978-0-7918-7913-9
  • Copyright © 1989 by ASME

abstract

This paper presents results of an experimental investigation into the effects of inlet skew on the flowfield of a large scale axial flow turbine cascade. The results are presented in terms of the development of the streamwise vorticity since, in classical terms, the streamwise vorticity generates the transverse velocity components that cause the generation of the secondary losses. Inlet skew is shown to have a profound effect on the distribution and magnitude of the generated losses. A number of correlations for the secondary losses are compared with the measured values and it is shown that the correlations are not adequate for accurate loss prediction purposes.

Copyright © 1989 by ASME
This article is only available in the PDF format.

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