WEAR OF SMALL ORIFICES BY STREAMING CURRENT DRIVEN CORROSION,

Abstract

Wear on the upstream side of small metal orifices subject to large pressure drops (3000 psi) in phosphate ester base hydraulic fluids was found to be the result of an electrochemical corrosion driven by streaming currents. A theory for the production of the streaming current by the flowing fluid is described. Results of the theory are compared with current measurements and observed wear patterns. A large variation of wall shear stress along the metal surface is found to be necessary for the wear. (Author)

Document Details

Document Type
Technical Report
Publication Date
Apr 01, 1969
Accession Number
AD0689012

Entities

People

  • D. W. Mahaffey
  • J. H. Olsen
  • T. R. Beck

Organizations

  • Boeing

Tags

DTIC Thesaurus Topics

  • Corrosion
  • Drops
  • Fluids
  • Hydraulic Fluids
  • Measurement
  • Organophosphates
  • Particles
  • Pressure Measurement
  • Production
  • Shear Stresses
  • Stresses

Readers

  • Fluid Mechanics and Fluid Dynamics.
  • Plasma Physics / Magnetohydrodynamics
  • Tribology (the study of the boundary interaction between sliding surfaces, lubrication, wear and friction).