Spectroscopic Studies of Inhibited Opposed Flow Propane/Air Flames

Abstract

Planar Laser Induced Fluorescence (PLIF) is used to measure OH concentration profiles in an atmospheric pressure, opposed flow, propane (C3H8)/air flame. Flame inhibiting agents CF3Br, N2, Fe(CO)5, C3F7H, C3F6H2, CH3P(O)(OCH3)2, and P3N3F6 were added to the flame and relative OH concentration profiles were measured as each flame was extinguished. The OH profiles illustrate that addition of N2, C3F6H2, and C3F7H2, and C3F7H, 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 CH3P(O)(OCH3)2 and Fe(CO)5 to the flame demonstrated chemical inhibition capabilities greater than CF3Br with larger changes in OH concentrations.

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Document Details

Document Type
Technical Report
Publication Date
Jan 01, 1998
Accession Number
ADA379500

Entities

People

  • R. G. Daniel
  • R. R. Skaggs

Organizations

  • United States Army Research Laboratory

Tags

Communities of Interest

  • Air Platforms

DTIC Thesaurus Topics

  • Barometric Pressure
  • Chemical Reactions
  • Chemistry
  • Classification
  • Combustion
  • Dye Lasers
  • Fire Protection
  • Fire Suppression
  • Fluorescence
  • Inhibition
  • Inhibitors
  • Laser Induced Fluorescence
  • Lasers
  • Liquid Dye Lasers
  • Measurement
  • Physical Properties
  • Strain Rate

Readers

  • Aerospace Engineering
  • Combustion science or combustion engineering.

Technology Areas

  • Directed Energy