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TECHNICAL PAPERS: Gas Turbines: Turbomachinery

Lateral Forces From Single Gland Rotor Labyrinth Seals in Turbines

[+] Author and Article Information
Bum Ho Song, Seung Jin Song

School of Mechanical and Aerospace Engineering, Seoul National University, Seoul 151-742, Korea

J. Eng. Gas Turbines Power 126(3), 626-634 (Aug 11, 2004) (9 pages) doi:10.1115/1.1690771 History: Received December 01, 2001; Revised March 01, 2002; Online August 11, 2004
Copyright © 2004 by ASME
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References

Figures

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A cutaway section of a single gland turbine labyrinth seal
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Schematic view of a turbine stage with shrouded rotor
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Labyrinth seal parameters
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Control volume for axial momentum analysis
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Coordinate system for the eccentric analysis
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Leakage mass flow amount versus sealing gap for Pfau et al. 3 annular cascade
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Radial distributions of relative axial and tangential velocities at seal cavity exit (Station 3r)
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Absolute flow angle at the rotor exit for Peters et al. 4 turbine
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Velocity vectors at Stations 2 and 3
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Upstream axial velocity perturbation versus azimuthal angle; unshrouded prediction from Song and Martinez-Sanchez 1617
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Upstream pressure perturbation versus azimuthal angle; unshrouded prediction from Song and Martinez-Sanchez 1617
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Perturbation in the rotor region flow pressure versus azimuthal angle; unshrouded prediction from Song and Martinez-Sanchez 1617
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Pressure perturbation in the seal gland versus azimuthal angle
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Rotor blade loading perturbation versus azimuthal angle; unshrouded prediction from Song and Martinez-Sanchez 1617

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