Tribology and Lubricants

Korean Tribology Society (한국트라이볼로지학회)
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Leakage Analysis and Design Modification of the Combination-Type-Staggered-Labyrinth Seal

누설량 저감을 위한 래버린스 실의 설계개선 및 해석

  • 하태웅 (경원대학교 기계.자동차공학부)
  • Published : 2007.04.30
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Abstract

Leakage reduction through annular type labyrinth seals of steam turbine is necessary for enhancing their efficiency. In this study, modified geometry of the original combination-type-staggered-labyrinth seal has been suggested and numerical analysis for leakage prediction has been carried out for the modified-combination-type-staggered-labyrinth seal both based on bulk-flow model and using the CFD code FLUENT. The theoretical analysis based on bulk-flow model yields leakage reduction of the modified combination type staggered labyrinth seal by about 11%. Comparing with the result of Bulk-flow model analysis, the leakage result of CFD analysis shows reasonable agreement within 9.8% error.

Keywords

References

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  2. CFD를 사용한 스팀터빈용 각이 진 패킹 링 실의 누설량 예측 vol.25, pp.5, 2007, https://doi.org/10.9725/kstle.2009.25.5.298