The Impact of Accommodation Coefficient on Concentric Couette Flow

Abstract

Rarefied Couette flow between concentric rotating cylinders is investigated using Maxwell's slip-velocity boundary treatment. The study provides an independent reassessment of the velocity inversion process and demonstrates that the occurrence of an inverted velocity profile depends solely on the accommodation coefficient of the stationary outer cylinder. From the analysis, criteria are derived for the accommodation coefficient of the outer cylinder that can be used to predict whether an inverted, partially-inverted or normal velocity profile will occur. The present results are in close agreement with previous analytical solutions and in good qualitative agreement with available DSMC data.

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Document Details

Document Type
Technical Report
Publication Date
Jul 13, 2005
Accession Number
ADA446079

Entities

People

  • D. R. Emerson
  • R. W. Barber
  • Y Sun

Tags

Communities of Interest

  • Materials and Manufacturing Processes

DTIC Thesaurus Topics

  • Agreements
  • Boltzmann Equation
  • Boundaries
  • Coefficients
  • Computational Fluid Dynamics
  • Couette Flow
  • Equations
  • Flow
  • Fluid Dynamics
  • Fluid Flow
  • Gas Dynamics
  • Knudsen Number
  • Mean Free Path
  • Navier Stokes Equations
  • Rarefied Gas Dynamics
  • Rarefied Gases
  • Slip Flow

Readers

  • Computational Modeling and Simulation
  • Fluid Mechanics and Fluid Dynamics.
  • Molecular Photonics/Laser Physics