A Semi-Analytical Solution to the Dynamic Tracking of Non-contacting Gas Face Seals

[+] Author and Article Information
Bo Ruan

Mechanical Seal Division, A. W. Chesterton Company, Groveland, MA 01834

J. Tribol 124(1), 196-202 (Jun 13, 2001) (7 pages) doi:10.1115/1.1398292 History: Received January 17, 2001; Revised June 13, 2001
Copyright © 2002 by ASME
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Miller,  B. A., and Green,  I., 2000, “Numerical Formulation for the Dynamic Analysis of Spiral-Grooved Gas Face Seal,” ASME J. Tribol., 123, pp. 395–403.
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Zirkelback,  N., and San Andrés,  L., 1999, “Effect of Frequency Excitation on Force Coefficients of Spiral Groove Gas Seals,” ASME J. Tribol., 121, pp. 853–863.
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Jang,  G. H., and Kim,  Y. J., 1999, “Calculation of Dynamic Coefficients in a Hydrodynamic Bearing Considering Five Degrees of Freedom for a General Rotor-Bearing System,” ASME J. Tribol., 121, pp. 499–505.
Miller,  B. A., and Green,  I., 1999, “The Dynamic Properties of Annular Gas Squeeze Film Dampers,” Tribol. Trans., 43, pp. 302–310.
Ruan,  B., 2000, “Finite Element Analysis of the Spiral Groove Gas Face Seal at the Slow Speed and the Low Pressure Conditions—Slip Flow Consideration,” Tribol. Trans., 43, pp. 411–418.
Green,  I., and Etsion,  I., 1985, “Stability Threshold and Steady-State Response of Noncontacting Coned-Face Seals,” ASLE Trans., 28, pp. 449–460.


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(a) Schematic cross section of a spiral groove face seal with rotor misalignment; and (b) spiral groove geometry
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(a) Variation of axial and angular gas film stiffness coefficients with frequency; and (b) variation of axial and angular gas film damping coefficients with frequency.
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Comparison with Manoloski and Pan 2, variation of axial stiffness and damping coefficients with frequency for a spiral groove thrust bearing
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Comparison between semi-analytical solution and full numerical simulation: (a) rotor axial motion, z/Arz; (b) Rotor Angular Motion about x axis, αx/Ar; and (c) Rotor Angular Motion about y axis, αy/Ar




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