Analytical Expression for the Decay History of an Atmospheric Turbule

Abstract

This investigation was undertaken as a part of a larger effort to determine the implications of using coherent turbulent structures or turbules to calculate acoustic scattering from turbulent media, a process that has been suggested as a possible non-line-of-sight means of detecting enemy assets on the battlefield. I present an analytical solution to a correlate of the incompressible Navier-Stokes equation. The correlate equation is for the enstrophy, the square of the vorticity. The solution is an expression for the time history of the enstrophy for a particular choice of the initial velocity distribution.

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Document Details

Document Type
Technical Report
Publication Date
Oct 01, 1997
Accession Number
ADA331085

Entities

People

  • Harry J. Auvermann

Organizations

  • United States Army Research Laboratory

Tags

Communities of Interest

  • Energy and Power Technologies
  • Materials and Manufacturing Processes
  • Space
  • Weapons Technologies

DTIC Thesaurus Topics

  • Acoustic Scattering
  • Artillery
  • Atmospheric Sciences
  • Boltzmann Equation
  • Boundary Layer
  • Computational Science
  • Convolution Integrals
  • Differential Equations
  • Equations
  • Military Research
  • Navier Stokes Equations
  • Plastic Explosives
  • Reynolds Number
  • Scattering
  • Standards
  • Stratified Fluids
  • Turbulence

Fields of Study

  • Physics

Readers

  • Atmospheric Science / Meteorology, specifically Wind Wave Turbulence.
  • Combustion Dynamics and Shock Wave Physics.
  • Fluid Dynamics.