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Torque and Power Loss in a Cylindrical Fluid-Lubricated Bearing/Rotor System FREE

[+] Author Affiliations
Paul Goldman, Alex Petchenev, Donald E. Bently, Agnes Muszynska

Bently Rotor Dynamic Research Corp., Minden, NV

Paper No. 96-GT-408, pp. V005T14A049; 6 pages
doi:10.1115/96-GT-408
From:
  • ASME 1996 International Gas Turbine and Aeroengine Congress and Exhibition
  • Volume 5: Manufacturing Materials and Metallurgy; Ceramics; Structures and Dynamics; Controls, Diagnostics and Instrumentation; Education; General
  • Birmingham, UK, June 10–13, 1996
  • Conference Sponsors: International Gas Turbine Institute
  • ISBN: 978-0-7918-7876-7
  • Copyright © 1996 by ASME

abstract

The paper contains the study of the lubricant fluid forces applied to the journal in a cylindrical, externally-pressurized bearing. The analytical expressions take into account the appearance of fluid cavitation at high eccentricity level.

The obtained expressions for fluid forces and torque are used for numerical simulation of a simple, one-mode rotor system. The system exhibits typical fluid whirl/whip instability which results in high fluid resistance torque values. The latter is considered as one of the causes of turbomachinery efficiency deterioration due to fluid-induced instabilities.

This paper is a continuation of the study undertaken by Bently et al. (1985), Muszynska (1986), and Petchenev et al. (1995).

Copyright © 1996 by ASME
Topics: Torque , Fluids , Bearings , Rotors
This article is only available in the PDF format.

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