Flame-flow structure in an acoustically driven jet flame
Conference
·
OSTI ID:6423257
An investigation is presented of the interaction between the flowfield and the chemical reaction for non-premixed combustion in a flowfield dominated by large-scale vortical structures has been undertaken. The desired information on the flame-flow structure can be obtained from time-resolved field measurements of velocity and conserved and reactive scalars in a time-dependent laminar non-premixed hydrocarbon-air flame created by acoustic excitation of the fuel jet. Evolutionary images of soot luminosity, schlieren, laser scattering from TiO/sub 2/ particles and planar laser-induced fluorescence of OH are presented. The flowfield exhibits a complex structure, consisting initially of two concentric and counter-rotating vortex rings and a stagnation point on the flame axis. The effects of the flowfield structure on the combustion are evident in a comparison of the corresponding flowfield and OH concentration field images.
- Research Organization:
- Stanford Univ., Stanford, CA
- OSTI ID:
- 6423257
- Report Number(s):
- CONF-8610180-
- Country of Publication:
- United States
- Language:
- English
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Related Subjects
37 INORGANIC, ORGANIC, PHYSICAL, AND ANALYTICAL CHEMISTRY
400201 -- Chemical & Physicochemical Properties
400800* -- Combustion
Pyrolysis
& High-Temperature Chemistry
ACOUSTICS
CHALCOGENIDES
CHEMICAL REACTION KINETICS
COMBUSTION KINETICS
ELECTROMAGNETIC RADIATION
ENERGY-LEVEL TRANSITIONS
EXCITATION
FLAME PROPAGATION
FLAMES
FLOW RATE
FLUID FLOW
FLUORESCENCE
FUEL SYSTEMS
FUEL-AIR RATIO
HYDROCARBONS
IMAGES
INTERACTIONS
JETS
KINETICS
LAMINAR FLOW
LASER RADIATION
LUMINESCENCE
LUMINOSITY
OPTICAL PROPERTIES
ORGANIC COMPOUNDS
OXIDES
OXYGEN COMPOUNDS
PHYSICAL PROPERTIES
RADIATIONS
REACTION KINETICS
RESOLUTION
SOOT
STAGNATION
TIME RESOLUTION
TIMING PROPERTIES
TITANIUM COMPOUNDS
TITANIUM OXIDES
TRANSITION ELEMENT COMPOUNDS
400201 -- Chemical & Physicochemical Properties
400800* -- Combustion
Pyrolysis
& High-Temperature Chemistry
ACOUSTICS
CHALCOGENIDES
CHEMICAL REACTION KINETICS
COMBUSTION KINETICS
ELECTROMAGNETIC RADIATION
ENERGY-LEVEL TRANSITIONS
EXCITATION
FLAME PROPAGATION
FLAMES
FLOW RATE
FLUID FLOW
FLUORESCENCE
FUEL SYSTEMS
FUEL-AIR RATIO
HYDROCARBONS
IMAGES
INTERACTIONS
JETS
KINETICS
LAMINAR FLOW
LASER RADIATION
LUMINESCENCE
LUMINOSITY
OPTICAL PROPERTIES
ORGANIC COMPOUNDS
OXIDES
OXYGEN COMPOUNDS
PHYSICAL PROPERTIES
RADIATIONS
REACTION KINETICS
RESOLUTION
SOOT
STAGNATION
TIME RESOLUTION
TIMING PROPERTIES
TITANIUM COMPOUNDS
TITANIUM OXIDES
TRANSITION ELEMENT COMPOUNDS