A numerical model is developed for the dynamic analysis of gas lubricated spiral groove face seals. Effects of the rotor runout, misalignment, face contact, as well as the stiffness and damping of the secondary seal are considered. Seal axial and angular motions and key parameters such as torque, power loss, and flow rate are obtained by a global time integration scheme, which traces the time history of the dynamic sealing behaviors. The analysis of gas film lubrication, face contact, and the seal dynamics is cast as an inverse problem and the solution is obtained iteratively at each time step. Dynamic tracking motion and key sealing characteristics of a representative spiral groove gas seal undergoing transient operations are presented.
Issue Section:
Technical Papers
1.
Etsion
, I.
, 1982
, “A Review of Mechanical Face Seal Dynamic
,” Shock Vib. Dig.
, 14
, pp. 9
–14
.2.
Etsion
, I.
, 1985
, “Mechanical Face Seal Dynamics Update
,” Shock Vib. Dig.
, 17
, pp. 11
–16
.3.
Etsion
, I.
, 1991
, “Mechanical Face Seal Dynamics 1985–1989
,” Shock Vib. Dig.
, 23
, pp. 3
–7
.4.
Zirkelback
, N.
, and San Andre´s
, L.
, 1999
, “Effect of Frequency Excitation on Force Coefficients of Spiral Groove Gas Seals
,” ASME J. Tribol.
, 121
, pp. 853
–863
.5.
Miller
, B. A.
, and Green
, I.
, 1999
, “The Dynamic Properties of Annular Gas Squeeze Film Dampers
,” Tribol. Trans.
, 43
, pp. 302
–310
.6.
Shapiro
, W.
, and Colsher
, R.
, 1974
, “Steady-State and Dynamic Analysis of a Jet Engine, Gas Lubricated Shaft Seal
,” ASLE Trans.
, 17
, pp. 190
–200
.7.
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
.8.
Green
, I.
, and Barnsby
, R. M.
, 2000
, “A Simultaneous Numerical Solution for the Lubrication and Dynamic Stability of Noncontacting Gas Face Seals
,” ASME J. Tribol.
, 123
, pp. 388
–394
.9.
Harp
, S. R.
, and Salant
, R. F.
, 1998
, “Analysis of Mechanical Seal Behavior During Transient Operation
,” ASME J. Tribol.
, 120
, pp. 191
–197
.10.
Ruan, B., 2001, “Numerical Analysis of Spiral Groove Gas Seals under Transient Conditions,” presented at the 56th STLE Annual meeting, Orlando, May 20–24, 2001, and accepted for publication in Trib. Trans.
11.
Green
, I.
, and Etsion
, I.
, 1985
, “Stability Threshold and Steady-State Response of Noncontacting Coned-Face Seals
,” ASLE Trans.
, 28
, pp. 449
–460
.12.
Fukui
, S.
, and Kaneko
, R.
, 1988
, “Analysis of Ultra-Thin Gas Film Lubrication Based on Linearized Bolzmann Equation: First Report-Derivation of a Generalized Lubrication Equation Including Thermal Creep Flow
,” ASME J. Tribol.
, 110
, pp. 253
–261
.13.
Fukui
, S.
, and Kaneko
, R.
, 1990
, “A Database for Interpolation of Poiseuille Flow Rates for High Knudsen Number Lubrication Problem
,” ASME J. Tribol.
, 112
, pp. 78
–83
.14.
Greenwood
, J. A.
, and Williamson
, J. B. P.
, 1966
, “Contact of Nominally Flat Surfaces
,” Proc. R. Soc. London
, A295
, pp. 300
–319
.15.
Etsion
, I.
, and Front
, I.
, 1994
, “A Model for Static Sealing Performance of End Face Seals
,” Tribol. Trans.
, 37
, pp. 111
–119
.16.
O¨zisik, M. N., 1993, Heat Conduction, 2nd ed., John Wiley and Sons, Inc., New York, pp. 584–601.
17.
Lebeck, A. O., 1991, Principles and Design of Mechanical Face Seals, John Wiley and Sons, Inc., New York, pp. 355–357.
18.
James
, D. D.
, and Potter
, A. F.
, 1967
, “Numerical Analysis of the Gas-Lubricated Sprial-Groove Thrust Bearing-Compressor
,” ASME J. Lubr. Technol.
, 89
, pp. 439
–444
.19.
Bonneau
, D.
, and Huitric
, J.
, and Tournerie
, B.
, 1993
, “Finite Element Analysis of Grooved Gas Thrust Bearings and Grooved Gas Face Seals
,” ASME J. Tribol.
, 115
, pp. 348
–354
.Copyright © 2002
by ASME
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