Rotor in gas bearings dynamics experiment-calculated investigation

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Abstract

Mathematical model of rotor dynamics and test rig with rotor in gas bearings are developed for developing of experiment calculated model of high-speed rotor in gas bearings. Rotor mathematical model includes shaft model and nonlinear support with gasdynamic foil bearing model considering four body contact: shaft-gas film-foils-bearing race. Test rig with rotor in gas bearing for verification of numerical simulation results and for adjustment of small gas turbine units (GTU) shafting performance are developed. First stage of numerical simulations and experimental research are done for investigation of simulator rotor rotation in gas supports. Rotor orbits in supports are received for numerical model and experimental investigation and their comparative spectrum analysis are carried out.

About the authors

Yu. M. Temis

Central Institute of Aviation Motors

Author for correspondence.
Email: tejoum@ciam.ru

Doctor of Technical Sciences

Professor

Head of Mathematical Simulating Department

Russian Federation

M. Yu. Temis

Central Institute of Aviation Motors

Email: tejoum@ciam.ru

PhD

Head of Department Sector

Russian Federation

A. M. Egorov

Central Institute of Aviation Motors

Email: tejoum@ciam.ru

Engine

Russian Federation

V. V. Gavrilov

Central Institute of Aviation Motors

Email: tejoum@ciam.ru

Head of Department Sector

Russian Federation

V. N. Ogorodov

Central Institute of Aviation Motors

Email: tejoum@ciam.ru

Engineer

Russian Federation

References

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  2. Peng, Z.C. Hydrodynamic Analysis of Compliant Foil Bearings With Compressible Air Flow [Text] / Z.C. Peng, M.M. Khonsari. ASME J. Tribol., Vol. 126, 2004. – P. 542-546.
  3. Heshmat, H. Analysis of Gas Lubricated Journal Bearing [Text] / H. Heshmat, J. Walowit, O. Pinkas // J. Lubr. Tech. Trans. ASME, Vol. 105, № 4 (1983), – P. 647-655.
  4. Rotordynamic performance measurement of an oil-free turbocompressor supported on gas foil bearing [Text] / Yong-Bok Lee, Sang-Beom Cho, Tae-Young Kim [et al.] // Proc. of 8th IFToMM International Conference on Rotordynamics, 2010, KIST, Seoul, Korea.
  5. Kozanecki, Z. Theoretical and experimental investigations of oil-free support systems to improve the reliability of industrial turbomachinery [Text] / Z. Kozanecki, D. Kozanecka // Proc. of 8th IFToMM International Conference on Rotordynamics, 2010, KIST, Seoul, Korea.
  6. Dynamics of compact gas turbine rotor supported by gas bearing [Text] / J.M. Temis, M.J. Temis, A.M. Egorov [et al.] // Proc. of 8th IFToMM International Conference on Rotordynamics, 2010, KIST, Seoul, Korea.
  7. Temis, J.M. Elastohydrodynamic Contact Theory in Foil Gas Bearing [Text] / J.M. Temis, M.J. Temis, A.B. Mescheryakov // Proc. 4rd Int. Symp. on Stability Control of Rotating Machinery, 2007, Calgary, Canada, – P. 228-238.
  8. Темис, Ю.М. Модель газодинамического лепесткового подшипника [Текст] / Ю.М. Темис, М.Ю. Темис, А.Б. Мещеряков // Трение и износ. - Т.32. - №3, 2011. – С. 286-295.

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