Secondary Flow Control and Streamwise Vortices Formation PUBLIC ACCESS

[+] Author Affiliations
Piotr P. Doerffer

Polish Academy of Sciences, Gdansk, Poland

Jochen Amecke

Deutche Forschungsanstalt für Luft- und Raumfahrt, Göttingen, Germany

Paper No. 94-GT-376, pp. V001T01A129; 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


The structure of a secondary flow in a linear turbine cascade has been investigated. In order to analyse streamwise vortices configuration and to control their formation two types of side wall boundary layer fences have been applied. Results obtained proved that the streamwise fence reduces significantly spanwise extent of secondary flows. Transverse fence has no such effect but causes very significant change of location and the losses level in a passage vortex. Presented results cast some new light on the contribution of passage vortex, horse shoe vortex and a shear plain in between, to the losses maximum where these flow elements are in direct neighbourhood.

Copyright © 1994 by ASME
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