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Analysis of a Rim-Seal with a Semicircular Rib or Groove

반원형 리브 혹은 그루브가 부착된 림실에 대한 연구

  • Lee, Chung-Suk (Department of Mechanical Engineering, Graduate School, Inha Univ.) ;
  • Moon, Mi-Ae (Department of Mechanical Engineering, Graduate School, Inha Univ.) ;
  • Kim, Kwang-Yong (Department of Mechanical Engineering, Inha Univ.)
  • Received : 2013.03.19
  • Accepted : 2013.04.30
  • Published : 2013.06.01

Abstract

Effect of semicircular rib or groove on the performance of a rim-seal was evaluated using three-dimensional Reynolds-averaged Navier-Stokes equations. The turbulence was modeled using the one-equation Spalart-Allmaras turbulence closure model. Reynolds number based on the axial chord of the turbine blade was 500,000 at the mainstream outlet. The numerical results for a sealing effectiveness was validated in comparison with experimental data. To examine the effect of the semicircular rib or groove on sealing effectiveness of the rim-seal, location and diameter of the rib or groove were selected as the parameters to be performed. The rim-seals with the semicircular groove showed a higher sealing effectiveness than that with the semicircular rib. The semicircular groove installed on the stator side showed best sealing effectiveness among the numerical simulation results.

Keywords

References

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Cited by

  1. vol.17, pp.2, 2014, https://doi.org/10.5293/kfma.2014.17.2.068