Flow of a Rarefied Gas between Parallel and Almost Parallel Plates

Abstract

Rarefied gas flows in ultra-thin film slider bearings are studied in a wide range of Knudsen numbers. The generalized Reynolds equation first derived by Fukui and Kaneko has been extended by allowing for bounding surfaces with different physical structures, as an issue of relevance for applications. Since the solution of this equation requires that the Poiseuille and Couette flow rates between two parallel plates have to be accurately calculated in advance, we have used our recent results on Poiseuille flow and new results on Couette flow to evaluate the lubrication characteristics.

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Document Details

Document Type
Technical Report
Publication Date
Jul 13, 2005
Accession Number
ADA446080

Entities

People

  • Carlo Cercignani
  • Maria Lampis
  • Silvia Lorenzani

Organizations

  • Polytechnic University of Milan

Tags

DTIC Thesaurus Topics

  • Boundaries
  • Couette Flow
  • Difference Equations
  • Differential Equations
  • Equations
  • Flow
  • Flow Rate
  • Gases
  • Integral Equations
  • Knudsen Number
  • Navier Stokes Equations
  • Payload
  • Physical Properties
  • Poiseuille Flow
  • Pressure Distribution
  • Pressure Gradients
  • Rarefied Gases

Readers

  • Combustion Dynamics and Shock Wave Physics.
  • Parallel and Distributed Computing.
  • Tribology (the study of the boundary interaction between sliding surfaces, lubrication, wear and friction).