Accession Number:

AD0261094

Title:

ISOTHERMAL SQUEEZE FILMS

Descriptive Note:

Corporate Author:

INTERNATIONAL BUSINESS MACHINES CORP SAN JOSE CA

Personal Author(s):

Report Date:

1961-05-22

Pagination or Media Count:

50.0

Abstract:

A derivation is presented of the equation governing the pressure in a thin, flat film of ideal gas under isothermal conditions, when the surfaces bounding the film are in relative normal and tangential motion. When tangential motion is absent, the pressure equation reduces to a nonlinear heat equation, which admits of very few closed-form solutions. Various approximation methods are discussed, and two problems involving small periodic variation of the gap between parallel plates are solved by perturbation method for a film in which fluid inertia is negligible.

Subject Categories:

  • Lubricants and Hydraulic Fluids
  • Mechanics

Distribution Statement:

APPROVED FOR PUBLIC RELEASE