Investigation into the effect of piston ring seals on an integrated squeeze film damper model

다국어 초록 (Multilingual Abstract)

This research presents an advanced squeeze film damper model that integrates piston ring seal geometry, fluid inertia, and film cavitation to study their combined features. The configuration of the piston ring seal is inspected, and different sealing scenarios are discussed.
The flow rate in the seal arrangement is determined on the basis of the pressure gradient according to thin film theory. Moreover, the governing equation for the flow in the film land that considers fluid inertia is solved using the linear complementarity problem method to address the cavitation phenomenon. Validation is performed by comparing the model prediction with long bearing and short bearing models under different seal dimensions. Results show that an oversized gap in the seal grooves and a large frictional coefficient may lock the piston ring seal in the seal groove and thus reduce seal efficiency.

참고문헌 (Reference)

1 L. Della Pietra, "The squeeze film damper over four decades of investigations. Part I : Characteristics and operating features" 34 (34): 3-26, 2002

2 T. Fan, "The evaluation of linear complementarity problem method in modeling the fluid cavitation for squeeze film damper with off-centered whirling motion" 5 (5): 46-, 2017

3 M. C. Levesley, "The effect of oil supply and sealing arrangements on the performance of squeeze-film dampers : an experimental study" 210 (210): 221-232, 1996

4 L. San Andres, "Squeeze film dampers: Operation, models and technical issues, Modern Lubrication Theory, Notes 13" Texas A&M University Digital Libraries 2010

5 S. Hamzehlouia, "Squeeze film dampers executing small amplitude circular-centered orbits in highspeed turbomachinery" 2016 : 1-16, 2016

6 L. San Andres, "Squeeze film damper with a mechanical end seal : Experimental force coefficients derived from circular centered orbits" 130 (130): 042505-, 2008

7 R. A. Marmol, "Squeeze film damper characteristics for gas turbine engine" 100 (100): 139-146, 1978

8 N. Magge, "Philosophy, design, and evaluation of softmounted engine rotor systems" 12 (12): 318-324, 1975

9 Young Kong Ahn, "Optimal Design of Nonlinear Squeeze Film Damper Using Hybrid Global Optimization Technique" 대한기계학회 20 (20): 1125-1138, 2006

10 P. E. Allaire, "Oil Seal Effects and Subsynchronous Vibrations in High-speed Compressors, Lewis Research Center Instability in Rotating Machinery" NASA 1985

11 S. Y. Jung, "Measurements of pressure distributions and force coefficients in a squeeze film damper. Part II : partially sealed configuration" 34 (34): 383-388, 1991

12 E. Feder, "Investigation of squeeze film damper forces produced by circular centered orbits" 100 (100): 15-21, 1978

13 L. San Andres, "Identification of force coefficients in a squeeze film damper with a mechanical end seal-centered circular orbit tests" 129 (129): 660-668, 2007

14 A. Delgado-Marquez, "Identification of Force Coefficients in a Squeeze Film Damper with a Mechanical Seal" Texas A&M University 2005

15 L. San Andres, "High pressure floating ring oil seals, Modern Lubrication Theory, Note 11" Texas A&M University 2009

16 Q. Tan, "Fluid forces in short squeeze-film damper bearings" 30 (30): 733-738, 1997

17 A. Z. Szeri, "Fluid Film Lubricant: Theory and Design" Cambridge University Pres 2011

18 G. L. Arauz, "Experimental study on the effect of a circumferential feeding groove on the dynamic force response of a sealed squeeze film damper" 118 (118): 900-905, 1996

19 C. Defaye, "Experimental study of the radial and tangential forces in a whirling squeeze film damper" 49 (49): 271-278, 2006

20 G. Adiletta, "Experimental study of a squeeze film damper with eccentric circular orbits" 128 (128): 365-377, 2005

21 G. L. Arauz, "Experimental pressures and film forces in a squeeze film damper" 115 (115): 134-140, 1993

22 L. San Andrés, "Experimental measurement of the dynamic pressure and force response of a partially sealed squeeze film damper" 22-25, 1991

23 J. M. Vance, "Experimental measurement of the dynamic force response of a squeeze-film bearing damper" 97 (97): 1282-1290, 1975

24 F. Y. Zeidan, "Experimental investigation of cavitation effects on the squeeze film force coefficients" 237-242, 1989

25 R. W. Cottle, "Encyclopedia of Optimization" Springer US 1873-1878, 2008

26 S. Y. Jung, "Effects of vapor cavitation and fluid inertia on the force coefficients of a squeeze film damper. Part II—experimental comparisons" 36 (36): 700-706, 1993

27 S. Jäger, "Dynamic behaviour and sealing performance of piston rings used in squeeze-film-dampers" 2012 (2012): 9-13, 2012

28 Hongchang Wang, "Dynamic analysis for the energy storage flywheel system" 대한기계학회 30 (30): 4825-4831, 2016

29 J. Gehannin, "Complete squeeze-film damper analysis based on the ‘bulk flow’rquations" 53 (53): 84-96, 2009

30 F. Y. Zeidan, "Cavitation leading to a two phase fluid in a squeeze film damper" 23 (23): 100-104, 1989