NDLI: Recent Developments in Turbomachinery Modelling for Improved Balancing and Vibration Response Analysis

Content Provider	The American Society of Mechanical Engineers (ASME) Digital Collection
Author	Peter, Y. P. Chen Feng, Ningsheng Eric, J. Hahn Hu, Wenlong
Copyright Year	2004
Abstract	Present day turbogenerator installations are statically indeterminate rotor-bearing-foundation systems utilising non-linear hydrodynamic bearings. For optimal balancing and diagnostic purposes it is important to be able to correctly predict the system vibration behaviour over the operating speed range. Essential aspects of this involve identifying the unbalance state, identifying appropriate dynamic foundation parameters, and identifying the system configuration state (relative location of the support bearings). This paper shows that provided the system response is periodic at some speeds over the operating range, and provided appropriate rotor and bearing housing motion measurements are made, it is possible in principle to satisfactorily achieve the above identifications without relying on Reynolds equation for evaluating bearing forces; and preliminary results indicate that the identifications achieved promise to be superior to identification approaches which use Reynolds equation.
Sponsorship	International Gas Turbine Institute
Starting Page	789
Ending Page	798
Page Count	10
File Format	PDF
ISBN	0791841715
DOI	10.1115/GT2004-54305
e-ISBN	0791837394
Volume Number	Volume 6: Turbo Expo 2004
Conference Proceedings	ASME Turbo Expo 2004: Power for Land, Sea, and Air
Language	English
Publisher Date	2004-06-14
Publisher Place	Vienna, Austria
Access Restriction	Subscribed
Subject Keyword	Turbomachinery modelling Unbalance identification Foundation identification Configuration state identification Vibration Bearings Rotors Turbogenerators Turbomachinery Motion measurement Modeling
Content Type	Text
Resource Type	Article

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