Two- and Three-Dimensional Measurements in Flames

Abstract

Three-scalar measurements were made in a turbulent nonpremixed flame (Re=15000) to increase confidence in the two-scalar technique based on simultaneous imaging of Rayleigh scattering and fuel Raman scattering. Nitrogen Raman scattering was employed as an passive conserved scalar and mixture fraction was calculated by two independent approaches. These experiments showed that proper parameterization of mixture fraction-dependent terms appearing in the expression for mixture fraction can reduce deficiencies for lean values of mixture fraction and near stoichiometric. Additionally, the spatial resolution of the optical setup was characterized and determined to be sufficient for resolving scalar dissipation.

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Document Details

Document Type
Technical Report
Publication Date
Aug 26, 1998
Accession Number
ADA353497

Entities

People

  • Marshall B. Long

Organizations

  • Yale University

Tags

Communities of Interest

  • Energy and Power Technologies

DTIC Thesaurus Topics

  • Chemical Reactions
  • Chemistry
  • Combustion
  • Diffusion
  • Dissipation
  • Dye Lasers
  • Electromagnetic Scattering
  • Lasers
  • Liquid Dye Lasers
  • Measurement
  • Raman Scattering
  • Rayleigh Scattering
  • Reynolds Number
  • Scattering
  • Three Dimensional
  • Turbulent Mixing
  • Two Dimensional

Fields of Study

  • Physics

Readers

  • Coastal Oceanography
  • Combustion science or combustion engineering.
  • Systems Analysis and Design