Application of Computational Fluid Dynamics and Fluid–Structure Interaction Method to the Lubrication Study of a Rotor–Bearing System
Tóm tắt
Computational methods were used to analyse the elasto-hydrodynamic lubrication of a complex rotor–bearing system. The methodology employed computational fluid dynamics (CFD), based on the Navier–Stokes equation and a fluid–structure interaction (FSI) technique. A series of models representing the system were built using the CFD–FSI methodology to investigate the interaction between the lubrication of the fluid film, and elastic dynamics of the rotor and journal bearing. All models followed an assumption of isothermal behaviour. The FSI methodology was implemented by setting nodal forces and displacements to equilibrium at the fluid–structure interface, therefore allowing the lubrication of the fluid and the elastic deformation of structures to be solved simultaneously. This is significantly different to the more common techniques—such as the Reynolds equation method—that use an iterative solution to balance the imposed load and the force resulting from the pressure of the fluid film to within a set tolerance. Predictions using the CFD–FSI method were compared with the results of an experimental study and the predictions from an ‘in-house’ lubrication code based on the Reynolds equation. The dynamic response of the system was investigated with both rigid and flexible bodies for a range of different bearing materials and dynamic unbalanced loads. Cavitation within the fluid film was represented in the CFD–FSI method using a simplified phase change boundary condition. This allowed the transition between the liquid and vapour phases to be derived from the lubricant’s properties as a function of pressure. The combination of CFD and FSI was shown to be a useful tool for the investigation of the hydrodynamic and elasto-hydrodynamic lubrications of a rotor–bearing system. The elastic deformation of the bearing and dynamic unbalanced loading of the rotor had significant effects on the position of its locus.
Tài liệu tham khảo
citation_journal_title=Tribol. Lett.; citation_title=Effect of lubricant non-Newtonian behavior and elastic deformation on the dynamic performance of finite journal plastic bearings; citation_author=TA Osman; citation_volume=17; citation_issue=1; citation_publication_date=2004; citation_pages=31-40; citation_doi=10.1023/B:TRIL.0000017416.95176.30; citation_id=CR1
Habchi, W., Eyheramendy, D., Vergne, P., Morales-Espejel, G.: A full-system approach of the elastohydrodynamic line/point contact problem. J. Tribol.-Trans. ASME 130(2) (2008)
Saber, E., El-Gamal, H.: Effect of elastic deformation of the journal bearing shell on its dynamic stability. IUTAM Symposium on Elastohydrodynamics and Micro-elastohydrodynamics, pp. 121–131 (2006)
citation_journal_title=J. Eng. Gas Turbines Power; citation_title=Heavily loaded gas foil bearings: a model anchored to test data; citation_author=TH Kim, LS Andres; citation_volume=130; citation_issue=1; citation_publication_date=2008; citation_pages=012504-8; citation_doi=10.1115/1.2770494; citation_id=CR4
citation_journal_title=Proc. Inst. Mech. Eng. J.; citation_title=Past, present and future studies in elastohydrodynamics; citation_author=D. Dowson, P. Ehret; citation_volume=213; citation_issue=5; citation_publication_date=1999; citation_pages=317-333; citation_id=CR5
citation_journal_title=J. Tribol.-Trans. ASME; citation_title=A new model of thermoelastohydrodynamic lubrication in dynamically loaded journal bearings; citation_author=A Fatu, M Hajjam, D Bonneau; citation_volume=128; citation_issue=1; citation_publication_date=2006; citation_pages=85-95; citation_doi=10.1115/1.2114932; citation_id=CR6
citation_journal_title=J. Tribol.-Trans. ASME; citation_title=Numerical analysis of thermoelastohydrodynamic behavior of elastomer radial lip seals; citation_author=A Maoui, M Hajjam, D Bonneau; citation_volume=130; citation_issue=2; citation_publication_date=2008; citation_pages=021504-9; citation_doi=10.1115/1.2842294; citation_id=CR7
citation_journal_title=J. Tribol.-Trans. ASME; citation_title=A simple approach to the thermoelastohydrodynamic behavior of mechanical face seals; citation_author=N Brunetiere, A Apostolescu; citation_volume=52; citation_issue=2; citation_publication_date=2009; citation_pages=243-255; citation_doi=10.1080/10402000802441587; citation_id=CR8
citation_journal_title=J. Tribol.-Trans. ASME; citation_title=Influence of thermal and elastic deformations on connecting-rod big end bearing lubrication under dynamic loading; citation_author=S Piffeteau, D Souchet, D Bonneau; citation_volume=122; citation_issue=1; citation_publication_date=2000; citation_pages=181-191; citation_doi=10.1115/1.555341; citation_id=CR9
citation_journal_title=Proc. Inst. Mech. Eng. J.; citation_title=Thermoelastohydrodynamic lubrication for the connecting rod big-end bearing under dynamic loading; citation_author=D. Souchet, L. Hoang, D. Bonneau; citation_volume=218; citation_issue=5; citation_publication_date=2004; citation_pages=451-464; citation_id=CR10
citation_journal_title=J. Tribol.-Trans. ASME; citation_title=On the significance of thermal and deformation effects on a plain journal bearing subjected to severe operating conditions; citation_author=J Bouyer, M Fillon; citation_volume=126; citation_issue=4; citation_publication_date=2004; citation_pages=819-822; citation_doi=10.1115/1.1792678; citation_id=CR11
citation_journal_title=J. Tribol.-Trans. ASME; citation_title=Mixed elastohydrodynamic lubrication in a partial journal bearing—comparison between deterministic and stochastic models; citation_author=MB Dobrica, M Fillon, P Maspeyrot; citation_volume=128; citation_issue=4; citation_publication_date=2006; citation_pages=778-788; citation_doi=10.1115/1.2345404; citation_id=CR12
citation_journal_title=J. Eng. Gas Turbines Power; citation_title=Application of CFD analysis for rotating machinery. Part I. Hydrodynamic, hydrostatic bearings and squeeze film damper; citation_author=ZL Guo, T Hirano, RG Kirk; citation_volume=127; citation_issue=2; citation_publication_date=2005; citation_pages=445-451; citation_doi=10.1115/1.1807415; citation_id=CR13
citation_journal_title=J. Eng. Gas Turbines Power; citation_title=Application of computational fluid dynamics analysis for rotating machinery. Part II. Labyrinth seal analysis; citation_author=T Hirano, Z Guo, RG Kirk; citation_volume=127; citation_issue=4; citation_publication_date=2005; citation_pages=820-826; citation_doi=10.1115/1.1808426; citation_id=CR14
citation_journal_title=Tribol. Int.; citation_title=CFD analysis of journal bearing hydrodynamic lubrication by Bingham lubricant; citation_author=KP Gertzos, PG Nikolakopoulos, CA Papadopoulos; citation_volume=41; citation_issue=12; citation_publication_date=2008; citation_pages=1190-1204; citation_doi=10.1016/j.triboint.2008.03.002; citation_id=CR15
citation_journal_title=Tribol. Int.; citation_title=Thermal transient rough EHL line contact simulations by aid of computational fluid dynamics; citation_author=T Almqvist, R Larsson; citation_volume=41; citation_issue=8; citation_publication_date=2008; citation_pages=683-693; citation_doi=10.1016/j.triboint.2007.11.004; citation_id=CR16
citation_journal_title=J. Tribol.-Trans. ASME; citation_title=CFD modeling of a thermal and shear-thinning elastohydrodynamic line contact; citation_author=M Hartinger, M-L Dumont, S Ioannides, D Gosman, H Spikes; citation_volume=130; citation_issue=4; citation_publication_date=2008; citation_pages=041503-16; citation_id=CR17
citation_journal_title=J. Tribol.-Trans. ASME; citation_title=On the fluid–solid interaction in reference to thermoelastohydrodynamic analysis of journal bearings; citation_author=MM Khonsari, SH Wang; citation_volume=113; citation_issue=2; citation_publication_date=1991; citation_pages=398-404; citation_doi=10.1115/1.2920635; citation_id=CR18
citation_journal_title=Comput. Methods Appl. Mech. Eng.; citation_title=Model of fluid–structure interaction and its application to elastohydrodynamic lubrication; citation_author=Y Hong, D Chen, X Kong, J Wang; citation_volume=191; citation_issue=37–38; citation_publication_date=2002; citation_pages=4231-4240; citation_id=CR19
citation_journal_title=Tribol. Int.; citation_title=Identification of nonlinear dynamic coefficients in plain journal bearings; citation_author=V Meruane, R Pascual; citation_volume=41; citation_issue=8; citation_publication_date=2008; citation_pages=743-754; citation_doi=10.1016/j.triboint.2008.01.002; citation_id=CR20
citation_journal_title=Tribol. Int.; citation_title=Linking rigid multibody systems via controllable thin fluid films; citation_author=EA Estupiñan, IF Santos; citation_volume=42; citation_issue=10; citation_publication_date=2009; citation_pages=1478-1486; citation_doi=10.1016/j.triboint.2009.05.009; citation_id=CR21
citation_journal_title=Comput. Struct.; citation_title=Dynamics of spatial flexible multibody systems with clearance and lubricated spherical joints; citation_author=Q Tian, Y Zhang, L Chen, P Flores; citation_volume=87; citation_issue=13–14; citation_publication_date=2009; citation_pages=913-929; citation_doi=10.1016/j.compstruc.2009.03.006; citation_id=CR22
citation_title=Fundamentals of Fluid Film Lubrication; citation_publication_date=2004; citation_id=CR23; citation_author=BJ Hamrock; citation_author=SR Schmid; citation_author=BO Jacobson; citation_publisher=CRC
Li, M.: Non-linear dynamic behaviour of rotor–bearing system trained by bevel gears. Proc. Inst. Mech. Eng. C 222(4), 617–627 (2008)
citation_journal_title=J. Tribol.-Trans. ASME; citation_title=Journal orbits and their stability for rigid unbalanced rotors; citation_author=R Brancati, E Rocca, M Russo, R Russo; citation_volume=117; citation_issue=4; citation_publication_date=1995; citation_pages=709-716; citation_doi=10.1115/1.2831541; citation_id=CR25
citation_journal_title=J. Appl. Mech.-Trans. ASME; citation_title=A Ritz model of unsteady oil-film forces for nonlinear dynamic rotor–bearing system; citation_author=T Zheng, S Yang, Z Xiao, W Zhang; citation_volume=71; citation_issue=2; citation_publication_date=2004; citation_pages=219-224; citation_doi=10.1115/1.1640369; citation_id=CR26
citation_journal_title=Tribol. Int.; citation_title=Stability and response analysis of symmetrical single-disk flexible rotor–bearing system; citation_author=SX Zhao, H Xu, G Meng, J Zhu; citation_volume=38; citation_issue=8; citation_publication_date=2005; citation_pages=749-756; citation_doi=10.1016/j.triboint.2004.11.004; citation_id=CR27
citation_journal_title=Mech. Mach. Theory; citation_title=Simultaneous estimation of the residual unbalance and bearing dynamic parameters from the experimental data in a rotor-bearing system; citation_author=R Tiwari, V Chakravarthy; citation_volume=44; citation_issue=4; citation_publication_date=2009; citation_pages=792-812; citation_doi=10.1016/j.mechmachtheory.2008.04.008; citation_id=CR28
citation_journal_title=J. Tribol.-Trans. ASME; citation_title=CFD analysis of a low friction pocketed pad bearing; citation_author=P Brajdic-Mitidieri, AD Gosman, E Ioannides, HA Spikes; citation_volume=127; citation_issue=4; citation_publication_date=2005; citation_pages=803-812; citation_doi=10.1115/1.2032990; citation_id=CR29
citation_journal_title=J. Tribol.-Trans. ASME; citation_title=Two reference time scales for studying the dynamic cavitation of liquid films; citation_author=DC Sun, DE Brewe; citation_volume=114; citation_issue=3; citation_publication_date=1992; citation_pages=612-615; citation_doi=10.1115/1.2920925; citation_id=CR30
citation_journal_title=Proc. Inst. Mech. Eng. J; citation_title=The influence of sea water in oil emulsion on bearing performance; citation_author=H. Liu, H. Xu, Y. Zhang, H. Ji, Y. Ge, P. Ellison, Z. Jin; citation_volume=223; citation_issue=3; citation_publication_date=2009; citation_pages=457-468; citation_id=CR31
citation_journal_title=Lubr. Eng.; citation_title=Design and realization of sliding bearing performance computing application system; citation_author=A.B. Zhu, L.S. Wu, Y.J. Chen, Y.B. Xie; citation_volume=1; citation_publication_date=2005; citation_pages=91-93; citation_id=CR32
ADINA R&D, Inc.: ADINA System 8.4 Documentation (2006)
Dowson, D., Taylor, C.M.: Fundamental aspects of cavitation in bearings. In: Proceedings of the 1st Leeds-Lyon Symposium on Tribology, Leeds (1974)
citation_title=Applied Tribology: Bearing Design and Lubrication; citation_publication_date=2001; citation_id=CR35; citation_author=MM Khonsari; citation_author=E Richard Booser; citation_publisher=John Wiley & Sons
citation_journal_title=Tribol. Int.; citation_title=Combined thin-film and Navier–Stokes analysis in high Reynolds number lubrication; citation_author=J Frene, M Arghir, V Constantinescu; citation_volume=39; citation_issue=8; citation_publication_date=2006; citation_pages=734-747; citation_doi=10.1016/j.triboint.2005.07.004; citation_id=CR36