Comprehensive model to determine the effects of temperature and species fluctuations on reaction rates in turbulent reacting flows
Reaction rates in turbulent, reacting flows are reviewed. Assumed probability density functions (pdf) modeling of reaction rates is being investigated in relation to a three variable pdf employing a 'most likely pdf' model. Chemical kinetic mechanisms treating hydrogen air combustion is studied. Perfectly stirred reactor modeling of flame stabilizing recirculation regions was used to investigate the stable flame regions for silane, hydrogen, methane, and propane, and for certain mixtures thereof. It is concluded that in general, silane can be counted upon to stabilize flames only when the overall fuel-air ratio is close to or greater than unity. For lean flames, silane may tend to destabilize the flame. Other factors favoring stable flames are high initial reactant temperatures and system pressure.
- Research Organization:
- Cooper Union Research Foundation, New York (USA)
- OSTI ID:
- 6233778
- Report Number(s):
- N-8316669; NASA-CR-169767
- Country of Publication:
- United States
- Language:
- English
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Related Subjects
400800* -- Combustion
Pyrolysis
& High-Temperature Chemistry
ALKANES
CHEMICAL REACTION KINETICS
COMBUSTION KINETICS
ELEMENTS
FLUID FLOW
FUEL-AIR RATIO
HYDRIDES
HYDROCARBONS
HYDROGEN
HYDROGEN COMPOUNDS
KINETICS
MATHEMATICAL MODELS
METHANE
NONMETALS
ORGANIC COMPOUNDS
PROPANE
REACTION KINETICS
SILANES
SILICON COMPOUNDS
TEMPERATURE EFFECTS
TURBULENT FLOW