Accession Number:

AD0460741

Title:

AN ANALYTICAL STUDY OF THIN FLUID FILMS IN FACETYPE SHAFT SEALS,

Descriptive Note:

Corporate Author:

NAVY MARINE ENGINEERING LAB ANNAPOLIS MD

Personal Author(s):

• Snapp, Ralph B.

Report Date:

1962-07-01

Pagination or Media Count:

122.0

Abstract:

An analytical study of thin fluid films between the sealing surfaces of face-type seals is presented for parallel, linear converging, linear diverging, and three types of parabolic faces. Equations are developed to analyze the effect of these contours on pressure profile, fluid force at seal face, film thickness, and leakage rate. Centrifugal effect of the fluid film is included in the analyses as well as elastic deformation of the sealing surface in bnth radial and axial directions. Equations are also developed for including film thickness variations in the tangential direction. Graphic comparisons of numerical solutions to the equations are presented for the various cases analyzed. Author

Descriptors:

• *FILMS
• THRUST BEARINGS
• HYDRAULIC SEALS
• MATHEMATICAL ANALYSIS
• EQUATIONS
• PRESSURE
• FORCE(MECHANICS)
• THICKNESS
• CENTRIFUGAL FIELDS
• ELASTIC PROPERTIES
• DEFORMATION
• GRAPHICS
• PARABOLIC BODIES
• SURFACE PROPERTIES
• PERFORMANCE(ENGINEERING)
• DIGITAL COMPUTERS
• MARINE PROPELLERS
• SHAFT COUPLINGS
• CARBON
• WATER

Subject Categories:

Distribution Statement:

APPROVED FOR PUBLIC RELEASE