Flame propagation in gaseous fuel mixtures in semiconfined geometries
The possible hazardous consequences of large spills of liquefied natural gas (LNG) are not completely known at present, but research into the problem is advancing steadily. Here we review previous work on flame propagation in gaseous fuels contained in semiconfined geometries. We formulate our present understanding of the phenomena involved, describing some of the parameters that may have an effect on flame propagation, flame acceleration, and the transition from deflagration to detonation. We describe some of our recent experiments on combustion in semiconfined geometries. Our results suggest that turbulence-producing obstacles in the flow path are the primary cause of acceleration of the flame front. Other parameters remain to be investigated, however, before we can give a satisfactory explanation of flame acceleration.
- Research Organization:
- California Univ., Livermore (USA). Lawrence Livermore Lab.
- DOE Contract Number:
- W-7405-ENG-48
- OSTI ID:
- 6489996
- Report Number(s):
- UCID-19000; ON: DE81025115
- Country of Publication:
- United States
- Language:
- English
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Related Subjects
033000* -- Natural Gas-- Properties & Composition
37 INORGANIC, ORGANIC, PHYSICAL, AND ANALYTICAL CHEMISTRY
400800 -- Combustion
Pyrolysis
& High-Temperature Chemistry
AIR
CHEMICAL REACTIONS
COMBUSTION
CONFIGURATION
DETONATIONS
DISPERSIONS
ENERGY SOURCES
FLAME PROPAGATION
FLUIDS
FOSSIL FUELS
FUEL GAS
FUELS
GAS FUELS
GASES
GEOMETRY
LIQUEFIED NATURAL GAS
MATHEMATICS
MIXTURES
NATURAL GAS
OXIDATION
PHOTOGRAPHY
SCHLIEREN METHOD
THERMOCHEMICAL PROCESSES
TURBULENCE