Application of Rayleigh Scattering to Turbulent Flow with Heat Transfer and Combustion.

Abstract

Studies of premixed turbulent V-shaped flames have been carried out using two-point Rayleigh scattering. Density fluctuation intensities, two point density covariances, and mean density profiles were found to be in good agreement with a wrinkled laminar flame model which is an extension of the Bray Moss Libby model. The probability density function for the location of the flame sheet within the turbulent flame brush was measured and found to be approximately gaussian. Mean density profiles of the turbulent flame brush were found to have a self similar behavior when scaled with the maximum slope thickness. A new optical system was developed to make time resolved Rayleigh scattering measurements along a length of a laser beam, thus extending the two point technique to a multipoint one. Keywords: Premixed turbulent flame structure; Rayleigh scattering.

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Document Details

Document Type
Technical Report
Publication Date
Aug 07, 1985
Accession Number
ADA166223

Entities

People

  • L. Talbot

Organizations

  • University of California, Berkeley

Tags

DTIC Thesaurus Topics

  • Chemistry
  • Classification
  • Combustion
  • Data Science
  • Engineering
  • Flame Holders
  • Flow
  • Heat Transfer
  • Information Science
  • Intensity
  • Lasers
  • Measurement
  • Mechanical Engineering
  • Probability
  • Probability Density Functions
  • Rayleigh Scattering
  • Thickness

Fields of Study

  • Physics

Readers

  • Combustion science or combustion engineering.
  • Fluid Mechanics and Fluid Dynamics.
  • Statistical inference.

Technology Areas

  • Directed Energy
  • Directed Energy - Lasers