Observations and Analysis of Mechanical Seal Film Characteristics

[+] Author and Article Information
B. S. Nau

BHRA Fluid Engineering, Cranfield, Bedford, U.K.

J. of Lubrication Tech 102(3), 341-347 (Jul 01, 1980) (7 pages) doi:10.1115/1.3251534 History: Received June 14, 1979; Online November 17, 2009


The history of mechanical seal interface studies is summarized and the underlying unity of different approaches is presented diagrammatically. The distinction between “cavitation” and “vapor-transition” is discussed and photographs of seal films are presented to demonstrate similarities. An analytical approach to the calculation of film cavitation boundaries is presented together with a total flow conservation numerical technique. Results from each are presented and it is concluded that cavitation extent will often be greater than expected using over-simplified treatments.

Copyright © 1980 by ASME
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