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International Journal of Rotating Machinery
Volume 10 (2004), Issue 6, Pages 477-487

Part II—Case Studies for a Synchronous Thermal Instability Operating in Overhung Rotors

1Siemens Westinghouse Power Corporation, Orlando, Florida, USA
2Mechanical Engineering Department, Randolph Hall, Virginia Tech, Blacksburg 24061, VA, USA

Copyright © 2004 Hindawi Publishing Corporation. This is an open access article distributed under the Creative Commons Attribution License, which permits unrestricted use, distribution, and reproduction in any medium, provided the original work is properly cited.


In Part I, a theoretical model was developed for a synchronous thermal instability that is caused by differential viscous shearing in bearings of overhung rotors. This second part used computer programs, which were based on the theoretical model, to examine various case studies that pertain to this thermal instability. Both plain and tilting pad journal bearing rotors were examined and good agreement was found between the theoretical predictions and the practical results.