MEAN FREE PATH EFFECT IN SPIRAL GROOVED THRUST BEARINGS.

Abstract

The objective of the paper is to study the effect of the mean-free path on the steady-state performance characteristics of a spiral-grooved thrust bearing operating in extremely thin film and/or low ambient pressure environments. Numerical results for the most popular three versions of the spiral-grooved designs are presented. These results reveal that the effect of slip boundary conditions could contribute substantial reduction in performance. Helium is the worst gas lubricant in this sense because of its high Knudsen number. The slip-flow corrected results check well with recently published experimental data. (Author)

Document Details

Document Type
Technical Report
Publication Date
Nov 01, 1967
Accession Number
AD0671830

Entities

People

  • F. C. Hsing
  • S. B. Malanoski

Tags

DTIC Thesaurus Topics

  • Bearings
  • Boundaries
  • Environment
  • Experimental Data
  • Films
  • Flow
  • Knudsen Number
  • Lubricants
  • Mean Free Path
  • Slip Flow
  • Steady State
  • Thin Films
  • Thrust Bearings

Readers

  • Systems Analysis and Design
  • Tribology (the study of the boundary interaction between sliding surfaces, lubrication, wear and friction).