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Low temperature zone in a hydrocarbon-flame front VII. Structure of the flame front in hexane with aerosol fuel injection

Journal Article · · Combust., Explos. Shock Waves (Engl. Transl.); (United States)
OSTI ID:6633965
; ; ;
In most investigations of flame-front structure, the combustible mixture is obtained by injecting the fuel as a gas or vapor. Liquid injection is more convenient for the examination of heavier hydrocarbons, but the presence of small droplets influences combustion. Droplet sizes smaller than 0.01 mm allow flame propagation mechanisms analogous to those of the same hydrocarbon in the vapor state. The present paper analyzes the structures of rich hexane flames for the vapor phase and for the aerosol condition. In both cases hexane is introduced into a gas mixture of Ar and O/sub 2/. Provisions are made for sampling for mass spectrometry and for temperature measurement. Temperature profiles for the two flames show that the temperature rise for the flame with fuel introduced as a vapor begins at a greater distance from the luminous zone than the aerosolfueled flame. However, hydrocarbon concentrations are greater in the aerosol-fueled flame as is the temperature at the boundary of the luminous zone.
Research Organization:
Alma-Ata
OSTI ID:
6633965
Journal Information:
Combust., Explos. Shock Waves (Engl. Transl.); (United States), Journal Name: Combust., Explos. Shock Waves (Engl. Transl.); (United States) Vol. 18:6; ISSN CESWA
Country of Publication:
United States
Language:
English

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Related Subjects

090110 -- Hydrocarbon Fuels-- Properties-- (1979-1989)
10 SYNTHETIC FUELS
37 INORGANIC, ORGANIC, PHYSICAL, AND ANALYTICAL CHEMISTRY
400800* -- Combustion
Pyrolysis
& High-Temperature Chemistry
AEROSOLS
ALKANES
ARGON
ATOMIZATION
CHEMICAL COMPOSITION
CHEMICAL REACTIONS
COLLOIDS
COMBUSTION
COMPARATIVE EVALUATIONS
DISPERSIONS
DROPLETS
ELEMENTS
FLAME PROPAGATION
FLAMES
FLUIDS
GASES
HEXANE
HYDROCARBONS
MASS SPECTROSCOPY
NONMETALS
ORGANIC COMPOUNDS
OXIDATION
OXYGEN
PARTICLE SIZE
PARTICLES
RARE GASES
SIZE
SOLS
SPECTROSCOPY
TEMPERATURE GRADIENTS
TEMPERATURE MEASUREMENT
THERMOCHEMICAL PROCESSES
VAPORS