Spectroscopic Studies of Inhibited Opposed Flow Propane/Air Flames

Abstract

Planar Laser Induced Fluorescence (PLIF) and laser induced fluorescence are used to measure relative OH concentration profiles and maximum flame temperatures in an atmospheric pressure, opposed flow, propane (C3H8/air flame. Flame inhibiting agents CF3Br, N2, Fe(CO)5, FM-200, FE-36, DMMP, and PN were added to the flame and relative OH concentration profiles and peak flame temperatures were measured as each flame approached extinction. The OH profiles illustrate that addition of N2, FM-200, and FE-36 to the flame produced smaller changes in OH concentrations relative to CF3Br implying these agents have chemical inhibition capacities less than CF3Br. However, the addition of DMMP and Fe(CO)5 to the flame demonstrated chemical inhibition capacities greater than CF3Br with larger changes in OH concentrations. Similar trends are observed for peak flame temperatures and CF3Br, PN, DMMP, and Fe(CO)5 have temperature values (1600-1800 K) which are lower than the uninhibited flame peak temperature (2200 K).

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Document Details

Document Type
Technical Report
Publication Date
Jan 01, 1999
Accession Number
ADA379830

Entities

People

  • A. W. Miziolek
  • Kevin L. McNesby
  • R. G. Daniel
  • R. R. Skaggs
  • V. I. Babushok

Organizations

  • United States Army Research Laboratory

Tags

Communities of Interest

  • Energy and Power Technologies

DTIC Thesaurus Topics

  • Barometric Pressure
  • Chemical Properties
  • Chemical Reactions
  • Chemistry
  • Combustion
  • Decomposition
  • Dye Lasers
  • Energy
  • Extinction
  • Fire Protection
  • Inhibition
  • Laser Beams
  • Laser Induced Fluorescence
  • Lasers
  • Liquid Dye Lasers
  • Measurement
  • Strain Rate

Readers

  • Combustion science or combustion engineering.

Technology Areas

  • Directed Energy
  • Directed Energy - Lasers