Tribology and Lubricants

Korean Tribology Society (한국트라이볼로지학회)
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Leakage Analysis of Angled-Labyrinth-Packing-Ring Seal for Steam Turbine Using CFD

CFD를 사용한 스팀터빈용 각이 진 패킹 링 실의 누설량 예측

  • Ha, Tae-Woong (Dept. of Mechanical & Automotive Engineering, Kyungwon University) ;
  • Kang, Jung-Hyun (Dept. of Mechanical & Automotive Engineering, Kyungwon University)
  • 하태웅 (경원대학교 기계.자동차공학과) ;
  • 강정현 (경원대학교 기계.자동차공학과)
  • Published : 2009.10.31
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Abstract

An angled labyrinth seal is used for the diaphragm-packing-ring seal design of steam turbine due to its leakage reduction characteristic. CFD analysis using FLUENT has been performed to predict leakage and determine an optimum slanted angle which yields the best leakage reduction. Results show that the optimum value of slanted angle is $-30^{\circ}$ independent of number of labyrinth teeth, inlet pressure, and tooth height to pitch ratio. 3D CFD analysis has been performed for predicting leakage of the angled labyrinth seal. Comparing with the result of 2D CFD analysis, 3D CFD analysis shows 1.4% smaller.

Keywords

References

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