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Calibration of a Design Tool for Dynamic Characteristics of Gas Labyrinth Seals

[+] Author Affiliations
R. Gordon Kirk

Virginia Tech, Blacksburg, VA

Wen Jeng Chen

Eigen Technologies, Inc., Davidson, NC

Paper No. IMECE2016-65221, pp. V04BT05A062; 10 pages
doi:10.1115/IMECE2016-65221
From:
  • ASME 2016 International Mechanical Engineering Congress and Exposition
  • Volume 4B: Dynamics, Vibration, and Control
  • Phoenix, Arizona, USA, November 11–17, 2016
  • Conference Sponsors: ASME
  • ISBN: 978-0-7918-5055-8
  • Copyright © 2016 by ASME

abstract

The analysis of all critical path high pressure machinery must include the account of the influence of the gas labyrinth seals. This paper reviews the prior work on labyrinth seal analysis starting in the 1980’s. The discussion gives a summary of the calibration of the bulk flow analysis to CFD results for a number of conditions. The calibration process was conducted over the last decade and the current paper presents the key results needed to justify the use of this bulk flow analysis for design of machinery with bladed labyrinth seals. A new design tool is discussed with illustrations of the type of seals that can be studied. The dynamic characteristics calculated using the labyrinth seal program can be used in rotordynamic analysis programs to predict the change in system stability produced by the gas labyrinth seals.

Copyright © 2016 by ASME
Topics: Design , Calibration

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