Studies of Laser Induced Turbulence in the Atmosphere III

Abstract

Various aspects of the propagation of an intense laser beam through the atmosphere are considered. The basic laser-fluid equations are presented and a linearized analysis of these equations is given which predicts a very low power threshold for Brueckner-Jorna-type convective instabilities. Another class of instabilities is predicted to be of more practical importance than the convective instabilities and an effective Reynolds number is derived which may help to characterize these turbulent instabilities. A computer solution of the full set of non-linear equations is described, and the concept of 'utility analysis' of numerical differencing schemes is introduced.

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Document Details

Document Type
Technical Report
Publication Date
Jun 30, 1973
Accession Number
AD0782682

Entities

People

  • B. J. Lambrigtsen
  • J. D. Reichert
  • J. H. Marburger
  • W. G. Wagner
  • W. Y. Chen

Organizations

  • University of Southern California

Tags

Communities of Interest

  • Energy and Power Technologies

DTIC Thesaurus Topics

  • Boundary Layer
  • Coefficients
  • Computers
  • Convection
  • Difference Equations
  • Differential Equations
  • Dispersion Relations
  • Electric Fields
  • Electromagnetic Fields
  • Electromagnetic Radiation
  • Equations
  • Frequency
  • Heat Transfer
  • Laser Beams
  • Molecular Dynamics
  • Navier Stokes Equations
  • Temperature Gradients

Fields of Study

  • Physics

Readers

  • Finite Element Method (FEM) for solving Partial Differential Equations (PDEs)
  • Fluid Mechanics and Fluid Dynamics.
  • Pulsed Power and Plasma Physics.

Technology Areas

  • Directed Energy