Theoretical Analysis of Pneumatic Instability of Externally Pressurized Porous Gas Journal Bearings Considering Velocity Slip

[+] Author and Article Information
M. C. Majumder

Regional Engineering College, Durgapur 713 209, India

B. C. Majumdar

Indian Institute of Technology, Kharagpur 721 302, India

J. Tribol 110(4), 730-733 (Oct 01, 1988) (4 pages) doi:10.1115/1.3261721 History: Received November 12, 1987; Online October 29, 2009


An analysis based on first-order perturbation theory is presented for the determination of pneumatic instability of a rigid rotor supported on externally pressurized porous gas journal bearings considering velocity slip. The variation of threshold mass parameter with feeding parameter for various supply pressures and L/D ratios under slip and no slip conditions is shown. It has been observed that there is a little decrease in stability when slip is taken in the analysis.

Copyright © 1988 by ASME
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