Laser diagnostic analyses of sooting flames. Final report, 1 October 1980-30 September 1984

Technical Report · Thu Nov 29 04:00:00 EST 1984

OSTI ID:5785010

Dobbs, G M; Eckbreth, A C; Boedeker, L R

Temperature distribution and soot particle-size distributions were measured in axisymmetric, laminar, diffusion flames in order to provide the basis for modelling the influence of fuel structure and temperature on soot formation. This document is the final report and management summary for the joint activities of UTRC and Princeton University. Coherent anti-Stokes Raman spectroscopy (CARS) was used for nonintrusive determination of temperature. Soot particle size and number densities were determined by Mie scattering. The experimental results were then applied to current models of soot formation in an effort to determine the physical and chemical basis for fuel structure and temperature effects on soot formation in diffusion flames. In the course of this first application of CARS and Mie diagnostics to diffusion flames, a large number of questions was raised in regard to the structure of particulate-laden diffusion flames. Measured distributions were compared with a numerical flame-sheet model.

• Research Organization: United Technologies Research Center, East Hartford, CT (USA)
• OSTI ID: 5785010
• Report Number(s): AD-A-150478/6/XAB; UTRC/R-84-955388-F
• Country of Publication: United States
• Language: English

Related Subjects

37 INORGANIC, ORGANIC, PHYSICAL, AND ANALYTICAL CHEMISTRY
400800* -- Combustion
Pyrolysis
& High-Temperature Chemistry
42 ENGINEERING
421000 -- Engineering-- Combustion Systems
CHEMICAL REACTIONS
COMBUSTION
DENSITY
DIFFUSION
FLAMES
FUELS
LASER SPECTROSCOPY
MATHEMATICAL MODELS
OXIDATION
PARTICLE SIZE
PHYSICAL PROPERTIES
RAMAN SPECTROSCOPY
SIZE
SOOT
SPECTROSCOPY
TEMPERATURE DISTRIBUTION
THERMOCHEMICAL PROCESSES