The Growth of Hot Reduced Density Channels in Gases Due to Turbulence and Heat Conduction.

Abstract

Turbulence causes hot, reduced density channels in gases to dissipate rapidly. The scaling of channel radius with time is predicted using the averaged governing equations of fluid motion and the assumption of pseudo-self-similar expansion. Correlation terms in the governing equations are replaced by terms proportional to an eddy diffusivity and including the average fluid properties. The diffusive growth thus predicted is compared to experimental results and to the normal heat conduction limit. (Author)

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Document Details

Document Type
Technical Report
Publication Date
Aug 24, 1981
Accession Number
ADA103265

Entities

People

  • Michael Raleigh

Organizations

  • United States Naval Research Laboratory

Tags

Communities of Interest

  • Energy and Power Technologies
  • Space
  • Weapons Technologies

DTIC Thesaurus Topics

  • Air Force
  • Conductivity
  • Diffusion
  • Diffusivity
  • Electron Beams
  • Energy
  • Equations
  • Fluid Mechanics
  • Heat Transmission
  • Military Research
  • Molecular Dynamics
  • New Mexico
  • Physics
  • Physics Laboratories
  • Thermal Conductivity
  • Thermal Diffusivity
  • Transport Properties

Readers

  • Atmospheric Science / Meteorology, specifically Wind Wave Turbulence.
  • Thermal Physics or Thermal Science.