A comprehensive model to determine the effects of temperature and species fluctuations on reaction rates in turbulent reacting flows
Abstract
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 temperaturederived mostlikely probability density function (pdf) was used to describe the effects of temperature fluctuations on the Arrhenius reaction rate constant. A mostlikely 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.
 Publication:

Semiannual Status Report
 Pub Date:
 January 1982
 Bibcode:
 1982coun.rept.....F
 Keywords:

 Fuel Combustion;
 Probability Density Functions;
 Reaction Kinetics;
 Temperature Effects;
 Turbulent Flow;
 Concentration (Composition);
 Correlation Coefficients;
 Mathematical Models;
 Minimax Technique;
 Polynomials;
 Fluid Mechanics and Heat Transfer