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http://dx.doi.org/10.9725/kstle.2005.21.1.008

Lubrication Performance Analysis of a Spiral Groove Dry Gas Seal for a High-Speed Flying Object  

Lee An Sung (Rotor Dynamics Group, Korea Institute of Machinery and Materials)
Kim Jun Ho (R&D Center, Korea Seal Master Co.)
Publication Information
Tribology and Lubricants / v.21, no.1, 2005 , pp. 8-15 More about this Journal
Abstract
In this study a general Galerkin FE lubrication analysis method is utilized to analyze the complex lubrication performance of a spiral groove seal, which is being designed and developed for a high-speed flying object application operating at a high-speed of over 50,000 rpm. As at the equilibrium seal clearance the axial stiffness of the seal is predicted to have almost such a constant high value of $1.04\times10^8\;N/m$ regardless of a rotating speed, the seal is expected to maintain a stable thickness of lubrication film under a certain external excitation acting. Also, as even at an ultra high-speed of 80,000 rpm the axial damping of the seal is shown to have a rotatively high value of 5,775 N-s/m, the dynamic stability of the seal system at the axial degree of freedom is assured well enough.
Keywords
spiral groove; dry gas seal; ultra high-speed; lubrication performance; Galerkin FE analysis; high-speed flying object;
Citations & Related Records
Times Cited By KSCI : 2  (Citation Analysis)
연도 인용수 순위
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