Shear Reduction of 2D Point Vortex Diffusion

Abstract

Theory and simulations establish the effects of shear on the collisional diffusion of a 2D point vortex gas. For finite shear, the diffusion is considerably smaller than previous zero-shear theories predict, scaling inversely with the shear. Surprisingly, changing the sign of the applied shear changes the diffusion by an order of magnitude.

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Document Details

Document Type
Technical Report
Publication Date
Jun 24, 2002
Accession Number
ADP012536

Entities

People

  • C.. F. Driscoll
  • Daniel H. Dubin

Organizations

  • University of California, San Diego

Tags

Communities of Interest

  • Energy and Power Technologies

DTIC Thesaurus Topics

  • Charged Particles
  • Coefficients
  • Collisions
  • Diffusion
  • Diffusion Coefficient
  • Diffusion Theory
  • Dynamics
  • Equations
  • Flow
  • Fluid Flow
  • Molecular Dynamics
  • Orbits
  • Physics
  • Shear Flow
  • Simulations
  • Three Dimensional
  • Two Dimensional

Fields of Study

  • Physics

Readers

  • Fluid Mechanics and Fluid Dynamics.
  • Plasma Physics / Magnetohydrodynamics