Measurements of the structure of sooting laminar diffusion flames at variable pressure
Measurements of the structure of two-dimensional laminar ethylene-air diffusion flames have been made in the pressure range from 1.0 to 2.5 atmospheres. The effect of elevated pressure on soot formation was investigated through the use of light-scattering techniques to determine the soot volume fraction, particle size, and particle number density. Maximum and integrated soot volume fractions increased approximately as the pressure to a power between 1.5 and 2.0, and the soot yield (mass of soot/mass of fuel) increased approximately as the pressure to a power between 0.5 and 1.0. There was no significant effect of pressure on the size of the soot particles, the increase in the soot volume fraction resulting predominantly from an increase in the number density of particles. 18 refs., 9 figs.
- Research Organization:
- Sandia National Labs., Livermore, CA (USA); Stanford Univ., CA (USA). Dept. of Mechanical Engineering
- DOE Contract Number:
- AC04-76DR00789
- OSTI ID:
- 5422274
- Report Number(s):
- SAND-83-8776; ON: DE85016655
- Country of Publication:
- United States
- Language:
- English
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Related Subjects
400800* -- Combustion
Pyrolysis
& High-Temperature Chemistry
AIR
ALKENES
CHEMICAL REACTION YIELD
CHEMICAL REACTIONS
COMBUSTION
COMBUSTION PRODUCTS
DATA
DIFFUSION
ETHYLENE
EXPERIMENTAL DATA
FLAMES
FLUIDS
GASES
HYDROCARBONS
INFORMATION
LOW PRESSURE
MEDIUM PRESSURE
NUMERICAL DATA
ORGANIC COMPOUNDS
OXIDATION
PARTICLE SIZE
PRESSURE DEPENDENCE
SIZE
SOOT
THERMOCHEMICAL PROCESSES
VOLUME
YIELDS