Comprehensive model to determine the effects of temperature and species fluctuations on reaction rates in turbulent reacting flows
A principal element to be derived from modeling turbulent reacting flows is an expression for the reaction rates of the various species involved in any particular combustion process under consideration. A temperature-derived most-likely probability density function (pdf) was used to describe the effects of temperature fluctuations on the Arrhenius reaction rate constant. A most-likely bivariate pdf described the effects of temperature and species concentrations fluctuations on the reaction rate. A criterion is developed for the use of an appropriate temperature pdf. The formulation of models to calculate the mean turbulent Arrhenius reaction rate constant and the mean turbulent reaction rate is considered and the results of calculations using these models are presented.
- Research Organization:
- Cooper Union Research Foundation, New York (USA)
- OSTI ID:
- 6497187
- Report Number(s):
- NASA-CR-165108
- Country of Publication:
- United States
- Language:
- English
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Comprehensive model to determine the effects of temperature and species fluctuations on reaction rates in turbulent reacting flows
Model for reaction rates in turbulent reacting flows
Related Subjects
400800* -- Combustion
Pyrolysis
& High-Temperature Chemistry
CHEMICAL REACTION KINETICS
CHEMICAL REACTIONS
COMBUSTION
COMBUSTION KINETICS
FLUID FLOW
FUELS
KINETICS
MATHEMATICAL MODELS
OXIDATION
REACTION KINETICS
THERMOCHEMICAL PROCESSES
TURBULENT FLOW