CFD를 사용한 스팀터빈용 각이 진 패킹 링 실의 누설량 예측
Leakage Analysis of Angled-Labyrinth-Packing-Ring Seal for Steam Turbine Using CFD
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참고문헌
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초록
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 −30o 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.
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 −30o 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.
참고문헌 (14)
- Iwatsubo, T, "Evaluation of Instability Forces of Labyrinth Seals in Turbines or Compressors", NASA CP 2133 Proceedings of a workshop at Texas A&M University 12-14 May Entitled Rotordynamic Instability Problems in High Performance Turbomac-hinery, pp.139~167 (1980)
- Childs, D. W, "An Iwatsubo Based Solution for Labyrinth Seals: A Comparison to Experimental Results", ASME Trans. J. of Engineering for Gas Turbines and Power, 108, pp.325~331 (1986)
- Scharrer, J, "A Comparison of Experimental and Theoretical Results for Labyrinth Gas Seals", 박사, pp.1987
- 하태웅, "압축기용 라비린스 실의 동특성 해 석", 한국소음진동공학회지, 8(5), pp.849~855 (1998)
- Ha, T. W, "Rotordynamic Analysis for Stepped-Labyrinth Gas Seal Using Moody's Friction-Factor Model", KSME International Journal, 15(9), pp.1079~1089 (2001)
- 하태웅, "엇갈린 래버린스 실의 누설량 및 동특성 해석", 한국윤활학회지, 18(1), pp.24~33 (2002), 한국윤활학회
- 하태웅, "스팀 터빈용 조합형 엇갈린 래버린스 실의 누설량 및 동특성 해석", 유체기계저널, 7(6), pp.45~54 (2004), 유체기계공업학회
- Dietzen, F. J, "Calculating Rotordynamic Coefficients of Seals by Finite-Differe- nce Techniques", the 4th Workshop on Rotordynamic Instability Problems in High Performance Turbomach- inery, pp.77~98 (1986)
- CFD Solution Allowing Modeling Improvement to the Bulk Flow Rotordynamic Code of Dr. Childs for Grooved Seals, "Park, S. Y", Texas A&M University, ~, pp.TRC-SEAL -6-98 (1998)
- CFD Modeling for Dynamic Coefficients of Labyrinth Seals and Impeller Leakage Paths, "Moore, J", Texas A&M University, ~, pp.TRC-SEAL-2-98 (1998)
- 하태웅, "CFD를 사용한 터보기계 비접촉식 실의 누설량 예측", 유체기계저널, 9(6), pp.14~21 (2006), 유체기계공업학회
- 하태웅, "CFD를 사용한 복잡한 형상을 갖는 래버린 스 실의 누설량 예측", 윤활학회지, 22(2), pp.66~72 (2006)
- 하태웅, "누설량 저감을 위한 래버린스 실의 설계 개선 및 해석", 윤활학회지, 23(2), pp.43~48 (2007)
- "Fluent User's Guide Ver. 6.2", ~