Tomographic Analysis of CO Absorption in Low-Pressure Flame.

Abstract

Tomographic analysis is used to provide a correction to low-pressure, burner stabilized, stoichiometric premixed CH4/O2 flame temperatures measured using tunable diode laser (TDL) absorption spectroscopy employing CO two-line thermometry. It is shown that flame temperatures measured using line-of-sight-based two-line thermometry are always too low, and that the correction to the observed temperature is a nonlinear function of the height above the burner surface. It is also shown that at a given height in the flame, a constant temperature across the flame does not imply that vibrational populations are constant, and that at low pressures (<20 torr), the flame spreads radially beyond the burner diameter so that it may no longer be approximated by a one-dimensional model without application of an area correction. jg p.3

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Document Details

Document Type
Technical Report
Publication Date
Jun 01, 1995
Accession Number
ADA298455

Entities

People

  • A. W. Miziolek
  • J. B. Morris
  • Kevin L. McNesby
  • R. G. Daniel

Organizations

  • United States Army Research Laboratory

Tags

Communities of Interest

  • Advanced Electronics
  • Air Platforms
  • Energy and Power Technologies
  • Materials and Manufacturing Processes
  • Weapons Technologies

DTIC Thesaurus Topics

  • Absorption
  • Chemical Engineering
  • Chemistry
  • Commerce
  • Diameters
  • Engineering
  • Jet Propulsion
  • Laser Beams
  • Laser Induced Fluorescence
  • Lasers
  • Line Of Sight
  • Measurement
  • Mechanical Engineering
  • Military Research
  • Optics
  • Spectra
  • Spectroscopy

Fields of Study

  • Physics

Readers

  • Combustion science or combustion engineering.
  • Pulsed Power and Plasma Physics.

Technology Areas

  • Directed Energy
  • Directed Energy - Lasers