Laser rayleigh scattering for flame thermometry in a toroidal jet stirred combustor

Robert B. Barat, John P. Longwell, Adel F. Sarofim, Stephen P. Smith, Ezra Bar-Ziv

Research output: Contribution to journalArticlepeer-review

19 Scopus citations

Abstract

Pulsed laser Rayleigh scattering is used to obtain instantaneous flame temperatures in a turbulent flow combustor with poor optical access, a background of black body radiation, and laser induced glare. A novel method based on polarization is used for the extraction of the Rayleigh scattering. Probability density functions (PDFs) of the fluctuating temperature are obtained for fuel lean ethylene-air combustion. The smearing effects of shot noise are removed from the observed PDFs to obtain the actual fluctuating temperature PDF.

Original languageEnglish (US)
Pages (from-to)3003-3010
Number of pages8
JournalApplied Optics
Volume30
Issue number21
DOIs
StatePublished - Jul 20 1991

All Science Journal Classification (ASJC) codes

  • Atomic and Molecular Physics, and Optics
  • Engineering (miscellaneous)
  • Electrical and Electronic Engineering

Keywords

  • Combustion
  • Laser
  • PDF
  • Rayleigh scattering
  • Reconstruction
  • Shot noise
  • Temperature

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