Full Content is available to subscribers

Subscribe/Learn More  >

Parametric Single Gap Turbine Rim Seal Model With Boundary Generation for Asymmetric External Flow

[+] Author Affiliations
M. Hüning

Private Author, Blankenfelde-Mahlow, Germany

Paper No. GT2010-22434, pp. 977-990; 14 pages
  • ASME Turbo Expo 2010: Power for Land, Sea, and Air
  • Volume 4: Heat Transfer, Parts A and B
  • Glasgow, UK, June 14–18, 2010
  • Conference Sponsors: International Gas Turbine Institute
  • ISBN: 978-0-7918-4399-4 | eISBN: 978-0-7918-3872-3
  • Copyright © 2010 by ASME


In an effort to provide predictions for hot annulus ingestion flows across turbine rim seals into rotor-stator wheel-space cavities, this paper describes a parametric single gap turbine rim seal model, which contains of several different sub- or part-models. Annulus pressure variations are the underlying mechanism driving ingestion. Some of the sub-models are matched to published experimental results. The model results are compared with measurements from different test rigs. The proposed model calculates the annulus boundary conditions based on geometric, mean turbine aerodynamic and performance parameters for the rim seal under consideration. Special attention is paid to the modelling of the flow stagnation upstream of airfoils as a row of half-bodies and the local seal gap discharge coefficient in order to assess the flow distribution through the rim seal. Mixing zones are accounted by a mixing cascade modelling. The peak pressure attenuation behaviour around the seal is considered. Sensitivity studies, e.g. for the impact of annulus boundary layer thickness, are performed.

Copyright © 2010 by ASME



Interactive Graphics


Country-Specific Mortality and Growth Failure in Infancy and Yound Children and Association With Material Stature

Use interactive graphics and maps to view and sort country-specific infant and early dhildhood mortality and growth failure data and their association with maternal

Citing articles are presented as examples only. In non-demo SCM6 implementation, integration with CrossRef’s "Cited By" API will populate this tab (http://www.crossref.org/citedby.html).

Some tools below are only available to our subscribers or users with an online account.

Related Content

Customize your page view by dragging and repositioning the boxes below.

Related eBook Content
Topic Collections

Sorry! You do not have access to this content. For assistance or to subscribe, please contact us:

  • TELEPHONE: 1-800-843-2763 (Toll-free in the USA)
  • EMAIL: asmedigitalcollection@asme.org
Sign In