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Influence of a Honeycomb Facing on the Flow Through a Stepped Labyrinth Seal

[+] Author Affiliations
V. Schramm, K. Willenborg, S. Kim, S. Wittig

Universität Karlsruhe (TH), Karlsruhe, Germany

Paper No. 2000-GT-0291, pp. V003T01A092; 8 pages
doi:10.1115/2000-GT-0291
From:
  • ASME Turbo Expo 2000: Power for Land, Sea, and Air
  • Volume 3: Heat Transfer; Electric Power; Industrial and Cogeneration
  • Munich, Germany, May 8–11, 2000
  • Conference Sponsors: International Gas Turbine Institute
  • ISBN: 978-0-7918-7856-9
  • Copyright © 2000 by ASME

abstract

This paper reports numerical predictions and measurements of the flow field in a stepped labyrinth seal. The theoretical work and the experimental investigations were successfully combined to gain a comprehensive understanding of the flow patterns existing in such elements. In order to identify the influence of the honeycomb structure, a smooth stator as well as a seal configuration with a honeycomb facing mounted on the stator wall were investigated. The seal geometry is representative of typical three-step labyrinth seals of modern aero engines. The flow field was predicted using a commercial finite-volume code with the standard-k-ε-turbulence model. The computational grid includes the basic seal geometry as well as the three-dimensional honeycomb structures.

Copyright © 2000 by ASME
Topics: Flow (Dynamics)

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