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Effects of Geometry on Sealing Effectiveness of a Rim Seal

[+] Author Affiliations
Mi-Ae Moon, Chung-Suk Lee, Kwang-Yong Kim, Jun-Hee Kim

Inha University, Incheon, Republic of Korea

Paper No. GT2014-25368, pp. V05CT16A007; 12 pages
doi:10.1115/GT2014-25368
From:
  • ASME Turbo Expo 2014: Turbine Technical Conference and Exposition
  • Volume 5C: Heat Transfer
  • Düsseldorf, Germany, June 16–20, 2014
  • Conference Sponsors: International Gas Turbine Institute
  • ISBN: 978-0-7918-4573-8
  • Copyright © 2014 by ASME

abstract

A parametric study has been performed to find the effects of geometric parameters on sealing effectiveness of a rim seal, which is used to prevent the hot gas ingestion into the gas turbine component and to cool the turbine disk. The flow and temperature fields in the reference rim seal which was tested by Popović and Hodson have been investigated using three-dimensional Reynolds-averaged Navier-Stokes equations. The one-equation Spalart-Allmaras turbulence model has been selected as turbulence closure. Computational results for the area-averaged sealing effectiveness have been validated compared to the experimental data at the specified values of rim seal inlet velocities (Vc,in = 11.50m/s and 16.10m/s) and leakage fractions (0.50%, 0.75% and 1.00%). Best shape of the rim seal has been found among ten different shapes of the rim seal.

Copyright © 2014 by ASME

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