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http://dx.doi.org/10.6112/kscfe.2015.20.4.102

HONEYCOMB LABYRINTH SEAL LEAKAGE CHARACTERISTIC ANALYSIS WITH ACTUAL OPERATING CONDITIONS ON THE COMPRESSOR OF GAS TURBINE  

Lim, S.B. (School of Mechanical Engineering, Pusan National Univ.)
Kim, M.K. (School of Mechanical Engineering, Pusan National Univ.)
Kang, Y.H. (School of Mechanical Engineering, Pusan National Univ.)
Park, W.G. (School of Mechanical Engineering, Pusan National Univ.)
Publication Information
Journal of computational fluids engineering / v.20, no.4, 2015 , pp. 102-108 More about this Journal
Abstract
Recently, There are many studies in progress in order to improve the efficiency of the gas turbine. Leakage in losses of the gas turbine account for the largest proportion. Seal is a sealing device to reduce the flow from leaking by the pressure difference inside the turbine. Compressor has another value according to the shape and pressure conditions in each stage. Thus, it is necessary to seal design for boundary conditions in order to minimize leakage. At the actual operating conditions of the compressor, numerical analysis of honeycomb labyrinth seal was performed in accordance with pressure, temperature, rotor speed for CFD. As a result, when the temperature increases, the leakage is decreased. Also, when the pressure increases linearly with increased leakage, and there was no effect of the rotation speed.
Keywords
Gas; Turbine; CFD; Labyrinth; Seal; Honeycomb; Seal; Leakage; Compressible; Flow; Sealing; performance;
Citations & Related Records
Times Cited By KSCI : 2  (Citation Analysis)
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1 1989, Childs, D., Elrod, D. and Hale, K., "Annular Honeycomb Seals: Test Results for Leakage and Rotordynamic Coefficients; Comparison to Labyrinth and Smooth Configutations," ASME J. Tribol., Vol.111, pp.293-301.   DOI
2 2009, Yan, X., Li, J., Song, L. and Feng, Z., "Investigation on the Discharge and Total Temperature Increase Characteristic of the Labyrinth Seals with Honeycomb and Smooth Lands," ASME Journal of Turbomachinery, Vol.131, No,041009-1.
3 1993, Rhode, D.L., Ko, S.H. and Morrison, G.L., "Experimental and Numerical Assessment of an Advanced Labyrinth Seal," STLE Tribology transactions, Vol.37, pp.743-750.
4 1977, Stocker, H.L., Cox, D.M. and Holle, G.F., "Aerodynamic Performance of Conventional and Honeycomb Lands," Detroit Diesel Allison, NASA CR-135307.
5 2006, Ha, T.W., "Prediction of Combination Type Staggered Labyrinth Seal Leakage Using CFD," Journal of The Korean Society of Tribologists and Lubrication Engineers, Vol.22, No.2, pp.66-72.
6 2010, Luis, S.A. and Zachary, A., "Comparison of Leakage Performance in Three Types of Gas Annular Seals Operating at a High Temperature($300^{\circ}C$)," Tribology Transactions, Vol.53, No.3, pp.463-471.   DOI
7 2010, Li, J., Kong, S., Yan, X., Obi, S. and Feng, Z., "Numerical Investigations on Leakage Performance of the Rotating Labyrinth Honeycomb Seal," Gas Turbines: Structures and Dynamics of the ASME, Vol.132, No.6, pp.1-11.
8 2006, Ha, T.W., "Prediction of Non-Contact-Type Seal Leakage Using CFD," The KSFM Journal of Fluid Machinery, Vol.9, No.3, pp.14-21.
9 2007, Ha, T.W., "Leakage Analysis and Design Modification of the Combination-Type-Staggered-Labyrinth Seal," Journal of The Korean Society of Tribologists and Lubrication Engineers, Vol.23, No.2, pp.43-48.
10 2002, Sachramm, V., Willenborg, K., Kim, S. and Witting, S. "Influence of a Honeycomb Facing on the Flow Through a Stepped Labyrinth Seal," Transactions of the ASME, Vol.124, pp.140-146.