In order to avoid contact between the vibrating rotor and the stator, annular seals are designed with a relatively large radial clearance (∼100 μm) and, therefore, have an important leakage. The floating ring annular seal is able to reduce the leakage flow rate by using a much lower clearance. The seal is designed as a ring floating on the rotor in order to accommodate its vibrations. The pressure difference between the upstream and the downstream chambers is pressing the nose of the floating ring (secondary seal) against the stator. The forces acting on the floating ring are the resultant of the hydrodynamic pressure field inside the primary seal, the friction forces in the secondary seal, and the inertia forces resulting from the non-negligible mass of the ring. For proper working conditions, the ring of the annular seal must be able to follow the vibration of the rotor without any damage. Under the effect of the unsteady hydrodynamic pressure field (engendered by the vibration of the rotor), of the friction force, and of the inertia force, the ring will describe a periodic, a quasi-periodic, or a chaotic motion. Damage can come from heating due to friction in the secondary seal or from repeated impacts between the rotor and the ring. The present work presents an analytic model able to take into account only the synchronous periodic whirl motion of the floating ring.
Skip Nav Destination
Article navigation
Research Papers
Analytic Modeling of Floating Ring Annular Seals
Mihai Arghir,
Mihai Arghir
Institut Pprime, CNRS UPR3346,
Université de Poitiers
, 86962 Futuroscope Chasseneuil, France
Search for other works by this author on:
Manh-Hung Nguyen,
Manh-Hung Nguyen
Institut Pprime, CNRS UPR3346,
Université de Poitiers
, 86962 Futuroscope Chasseneuil, France
Search for other works by this author on:
David Tonon,
David Tonon
SNECMA Space Engine Division, 27208 Vernon,
France
Search for other works by this author on:
Jérôme Dehouve
Jérôme Dehouve
Centre National d’Etudes Spatiales, 91023 Courcouronnes Evry,
France
Search for other works by this author on:
Mihai Arghir
Institut Pprime, CNRS UPR3346,
Université de Poitiers
, 86962 Futuroscope Chasseneuil, France
Manh-Hung Nguyen
Institut Pprime, CNRS UPR3346,
Université de Poitiers
, 86962 Futuroscope Chasseneuil, France
David Tonon
SNECMA Space Engine Division, 27208 Vernon,
France
Jérôme Dehouve
Centre National d’Etudes Spatiales, 91023 Courcouronnes Evry,
France
J. Eng. Gas Turbines Power. May 2012, 134(5): 052507 (9 pages)
Published Online: March 1, 2012
Article history
Received:
May 29, 2011
Revised:
June 3, 2011
Online:
March 1, 2012
Published:
March 1, 2012
Citation
Arghir, M., Nguyen, M., Tonon, D., and Dehouve, J. (March 1, 2012). "Analytic Modeling of Floating Ring Annular Seals." ASME. J. Eng. Gas Turbines Power. May 2012; 134(5): 052507. https://doi.org/10.1115/1.4004728
Download citation file:
Get Email Alerts
Accelerating Chemical Kinetics Calculations with Physics Informed Neural Networks
J. Eng. Gas Turbines Power
Fully Coupled Analysis of Flutter Induced Limit Cycles: Frequency Versus Time Domain Methods
J. Eng. Gas Turbines Power (July 2023)
Impact of Ignition Assistant on Combustion of Cetane 30 and 35 Jet-Fuel Blends in a Compression-Ignition Engine at Moderate Load and Speed
J. Eng. Gas Turbines Power (July 2023)
Related Articles
The Numerical and Experimental Characteristics of Multimode Dry-Friction Whip and Whirl
J. Eng. Gas Turbines Power (May,2010)
A Comparison of Rotordynamic-Coefficient Predictions for Annular Honeycomb Gas Seals Using Three Different Friction-Factor Models
J. Tribol (July,2002)
The Analytical Solution and The Existence Condition of Dry Friction Backward Whirl in Rotor-to-Stator Contact Systems
J. Vib. Acoust (April,2007)
Prediction of Dry-Friction Whirl and Whip Between a Rotor and a Stator
J. Vib. Acoust (June,2007)
Related Proceedings Papers
Related Chapters
Analysis on Double Resonances of Generator Stator and Rotor Coupling Rigid Model
International Conference on Computer Technology and Development, 3rd (ICCTD 2011)
The Design and Implement of Remote Inclinometer for Power Towers Based on MXA2500G/GSM
International Conference on Mechanical and Electrical Technology, 3rd, (ICMET-China 2011), Volumes 1–3
Research Tools
Bearing Dynamic Coefficients in Rotordynamics: Computation Methods and Practical Applications