Accession Number : AD0747307

Title :   Lubrication Theory for Newtonian Fluids with Striated Roughness or Grooving.

Descriptive Note : Technical rept.,

Corporate Author : COLUMBIA UNIV NEW YORK LUBRICATION RESEARCH LAB

Personal Author(s) : Elrod,Harold G.

Report Date : AUG 1972

Pagination or Media Count : 25

Abstract : Earlier work by others concerning the effects of striated roughness and grooving upon the load-carrying capacity of lubricating films is summarized, substantiated and generalized. A multiple-scale double-variable technique is used on such lubrication problems for the first time. The present analysis applies to one-face roughness having striation wavelengths sufficiently long for the applicability of Reynolds equation. Transient effects are included. The final differential equation for support pressure is simple in form. In addition to predicting the effects of striated 'Reynolds roughness,' this equation can be directly used in grooved-bearing design. (Author)

Descriptors :   (*LUBRICATION, SURFACE ROUGHNESS), (*GAS BEARINGS, LUBRICATION), (*COMPUTERS, GAS BEARINGS), FRICTION, REYNOLDS NUMBER, FILMS, INCOMPRESSIBLE FLOW, THICKNESS, NUMERICAL ANALYSIS

Subject Categories : Computer Hardware

Distribution Statement : APPROVED FOR PUBLIC RELEASE