Fuels Combustion Resaearch.
Abstract
After great progress related to soot formation in normal diffusion flames, studies of near sooting inverse diffusion flames were begun to determine controlling precursors. Stable, temperature controlled inverse diffusion flames have been successfully developed and numerous chemical samples extracted and analyzed. Observed trends are being studied. The side chain oxidation of n-butyl benzene was found to follow the same processes as the smaller n-alkyl benzenes; abstraction, alkyl group displacement and thermal cleavage. The results have led to development of a simple general, mechanistic model for the oxidation of n-alkyl benzenes. Combustion property observations of isolated boron droplets were extended to boron/JP-10 slurries with various solid loadings. Some physical understanding of observed droplet-burning and disruption behavior was developed. Quasi-spherical hollow shells of the boron agglomerate with blowholes support the hypothesis of the formation of the impermeable shell and subsequent disruption of the primary slurry droplet. Boron suspension (cloud) combustion in the hot reaction products of a flat-flame burner has been pursued. The boric acid fluctuation bands were identified spectroscopically, and conditions for their flame occurrence measured. The work progresses toward establishment of ignition conditions and combustion times of 0.1-5 micron boron particles.
Document Details
- Document Type
- Technical Report
- Publication Date
- Oct 31, 1986
- Accession Number
- ADA175040
Entities
People
- F. A. Williams
- F. L. Dryer
- I. Glassman
Organizations
- Princeton University