Two Reference Time Scales for Studying the Dynamic Cavitation of Liquid Films

Abstract

Two formulas, one for the characteristic time of filling a void with the vapor of the surrounding liquid, and one of filling the void by diffusion of the dissolved gas in the liquid, are derived. Based on this analysis, it is seen that in an oil film bearing operating under dynamic loads, the content of the cavitation region should be oil vapor rather than air liberated from solution, if the oil is free of entrained air.

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Document Details

Document Type
Technical Report
Publication Date
Jan 01, 1990
Accession Number
ADA231727

Entities

People

  • D. C. Sun
  • David E. Brewe

Organizations

  • National Aeronautics and Space Administration

Tags

Communities of Interest

  • Materials and Manufacturing Processes

DTIC Thesaurus Topics

  • Army Aviation
  • Bearings
  • Bubbles
  • Chemical Engineering
  • Coefficients
  • Dissolved Gases
  • Dynamic Loads
  • Engineering
  • Engineers
  • Equations
  • Fluids
  • Industrial Engineering
  • Journal Bearings
  • New York
  • Physical Chemistry
  • Universities
  • Vapor Pressure

Fields of Study

  • Engineering

Readers

  • Combustion science or combustion engineering.
  • Rocket Propulsion.
  • Tribology (the study of the boundary interaction between sliding surfaces, lubrication, wear and friction).