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Flow Analysis in Gas Turbine Pre-Swirl Cooling Air Systems: Variation of Geometric Parameters

[+] Author Affiliations
K. Jarzombek, H. J. Dohmen, F.-K. Benra

University Duisburg-Essen, Duisburg, Germany

O. Schneider

Siemens AG, Power Generation, Mulheim, Germany

Paper No. GT2006-90445, pp. 1403-1411; 9 pages
  • ASME Turbo Expo 2006: Power for Land, Sea, and Air
  • Volume 3: Heat Transfer, Parts A and B
  • Barcelona, Spain, May 8–11, 2006
  • Conference Sponsors: International Gas Turbine Institute
  • ISBN: 0-7918-4238-X | eISBN: 0-7918-3774-2
  • Copyright © 2006 by ASME


This paper reports experimental and numerical results of the flow in a high radius pre-swirl system. Numerical results have been compared with measurement data for the investigated test rig and are in good agreement with the experimental results. To get a better understanding of the flow structure and the influence of geometric parameters in pre-swirl systems, variations were performed by 3D-CFD simulations on a derived and simplified model. Variations of radius ratio of pre-swirler to receiver, the pre-swirl cavity height and the pre-swirl cavity width are shown. The influencing effects of the varied parameters are shown by looking at pre-swirl effectiveness and total pressure losses.

Copyright © 2006 by ASME



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