The KSFM Journal of Fluid Machinery (한국유체기계학회 논문집)

Korean Society for Fluid machinery (한국유체기계학회)
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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
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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.

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References

  1. Wang, C. Z., Johnson, B. V., Jong, F. D., and Vashist, T. K., 2007, "Comparison of Flow Characteristics in Axial-gap Seals for Close-and Wide-spaced Turbine Stages," Proceedings of ASME Turbo Expo 2007, GT2007-27909.
  2. Lynch, S. P. and Thole, K. A., 2007, "The Effect of Combustor-turbine Interface Gap Leakage on the Endwall Heat Transfer for a Nozzle Guide Vane," Proceedings of ASME Turbo Expo 2007, GT2007-27867.
  3. Popović, I. and Hodson, H. P., 2012, "Improving Turbine Stage Efficiency and Sealing Effectiveness through Modification of the Rim Seal Geometry," Proceedings of ASME Turbo Expo 2012, GT2012-68026.
  4. ANSYS CFX-11.0, Solver Theory, Ansys Inc., 2006.
  5. Spalart, P. R. and Allmaras, S. R., 1992, "A One-Equation Turbulence Model for Aerodynamic Flows," AIAA, Aerospace Sciences Meeting and Exhibit, 30th, Paper 92-0439.
  6. Deck, S., Duveau, P., d'Espiney, P. and Guillen. P., 2002, "Development and Application of Spalart-Allamaras One Equation Turbulence Model to Three-Dimensional Supersonic Complex Configurations," Aerospace Science and Technology, Vol. 6, pp. 171-183. https://doi.org/10.1016/S1270-9638(02)01148-3
  7. Popović, I. and Hodson, H. P., 2010, "Aerothermal Impact of the Interaction between Hub Leakage and Mainstream Flows in Highly-loaded HP Turbine Blades," Proceedings of ASME Turbo Expo 2010, GT2010-22311.
  8. Popović, I., Hodson, H. P., Janke, E. and Wolf, T., 2011, "The Effect on Unsteadiness and Compressibility on the Interaction between Hub Leakage And Mainstream Flows in HP Turbines," Proceedings of ASME Turbo Expo 2011, GT2011-46608.

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