Parametric Investigation of the Steady-State Response of a Mechanical Seal With Two Flexibly Mounted Rotors

[+] Author and Article Information
J. Wileman

Georgia Tech Lorraine, Technopôle Metz 2000, 2-3, rue Marconi, 57070 Metz, France

I. Green

The George W. Woodruff School of Mechanical Engineering, Georgia Institute of Technology, Atlanta, GA 30332

J. Tribol 121(1), 69-76 (Jan 01, 1999) (8 pages) doi:10.1115/1.2833813 History: Received May 07, 1997; Revised March 02, 1998; Online January 24, 2008


A parametric analysis is performed to investigate the steady-state dynamic response of a mechanical seal with two flexibly mounted rotors. The effect of changing various inertia, support, and fluid film properties is examined. Short rotors are shown to benefit from gyroscopic aligning moments and to exhibit their maximum steady-state misalignment when one of the shaft speeds is zero. Long rotors experience misaligning gyroscopic moments, but if only one of the two rotors is long then aligning moments from the short rotor can be transmitted through the fluid and counteract the detrimental gyroscopic effect in the long rotor. In this case rotors which corotate are shown to have a higher steady-state misalignment than those which counterrotate because of the reduction of the hydrodynamic moments, thus leading to increased leakage and a higher probability of face contact.

Copyright © 1999 by The American Society of Mechanical Engineers
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