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http://dx.doi.org/10.7736/KSPE.2015.32.8.713

Study of the Dynamic Characteristics of a High-Pressure Labyrinth Seal Considering Rotor Whirling  

Kim, Chae Sil (School of Mechanical Engineering, Changwon National University)
Lee, Kyung Jin (Steam Turbine Engineering Team 3, Doosan Heavy Industries & Construction)
Shin, Min Jae (Vibration Durability Research Center, Changwon National University)
Publication Information
Journal of the Korean Society for Precision Engineering / v.32, no.8, 2015 , pp. 713-718 More about this Journal
Abstract
This article describes the calculation procedure for the dynamic characteristics of a high-pressure labyrinth seal wherein the friction force and rotor whirling force are considered; SFCP, the commercial code developed by Lee and two colleagues, is used in the procedure. The simulation results were reviewed in comparison to those of the experiments provided by Benckert; additionally, the SFCP simulation results were verified using the CFD analysis presented by Toshio Hirano. This calculation procedure may therefore be applied to the dynamic characteristics of the labyrinth seals of high-pressure turbo machinery.
Keywords
Labyrinth seal; SFCP; Frictional force; Dynamic characteristics of rotor;
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  • Reference
1 Martin, H. M., "Steam Leakage in Dummies of the Ljungstrom Type," Engineering, Vol. 3, 1919.
2 Gans, B. E., "Prediction of the Aero-Elastic Force in a Labyrinth Seal and Its Impact on Turbo Machinery Stability," Ph.D. Thesis, Department of Mechanical Engineering, Massachusetts Institute of Technology, 1983.
3 Benckert, H. and Wachter, T., "Flow Induced Spring Constants of Labyrinth Seals," Proc. of the Workshop on Rotordynamic Instability Problems in High- Performance Turbomachinery, pp. 189-212, 1980.
4 Ahn, J. H., Hur, J.-H., Moon, S.-J., Lee, J.-H., and Yoo, H., "Reduction of Leakage through Labyrinth Seal in a Steam Turbine by Modification of the Teeth Shape," Proc. of the SAREK Summer Conference, pp. 857-862, 2009.
5 Hur, J.-H., Ahn, J.-H., Park, J.-G., Moon, S.-J., Lee, J.-H., et al., "Analysis of Leakage through Labyrinth Seal in a Steam Trubine Due to Modification the Teeth Angle," Proc. of the SAREK Winter Conference, pp. 313-318, 2009.
6 Lee, K. J., Jung, H. H., and Kim, C. S., "A Study on the Dynamic Coefficient of Labyrinth Seals in a High Pressure Steam Turbine Considered to Whirl Motion," Proc. of the KSTLE Autumn Conference, pp. 145-146, 2010.
7 Hirano, T., Guo, Z., and Kirk, R. G., "Application of CFD Analysis for Rotating Machinery: Part 2- Labyrinth Seal Analysis," Proc. of the ASME Turbo Expo, International Joint Power Generation Conference, pp. 661-667, 2003.
8 Lee, K. J., "A Study on the Dynamic Coefficient of Labyrinth Seals in a High Pressure Steam Turbine," M.Sc. Thesis, Department of Mechanical Engineering, Changwon National University, 2009.