TECHNICAL PAPERS: Gas Turbines: Structures and Dynamics

Improving the Stability of Labyrinth Gas Seals

[+] Author and Article Information
K. Kwanka

Chair of Thermal Power Systems, Technische Universität München, Munich, Germany

J. Eng. Gas Turbines Power 123(2), 383-387 (Mar 01, 1997) (5 pages) doi:10.1115/1.1359772 History: Received December 01, 1996; Revised March 01, 1997
Copyright © 2001 by ASME
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Grahic Jump Location
The effect of a honeycomb stator on the dynamic coefficients (HW: honeycomb)
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Exciting force in dependence of whirling frequency and preswirl
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Minimizing the exciting forces with swirl brakes
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Change in stability of the forward and the backward mode caused by the seal
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Test rig for the identification of dynamic coefficients
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Arrangement of swirl brakes at the entrance of the seal
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See-through labyrinth with honeycomb-stator
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Relative and absolute deviation between measurement and least square fit
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Cross-coupled stiffness and direct damping of a see-through labyrinth seal with 9 cavities
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The effect of swirl brakes on the dynamic coefficients (iDB-i number of swirl brakes on circumference)




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