A TURBULENT REACTING FLOW MODEL THAT INCORPORATES DETAILED CHEMICAL-KINETICS

A turbulent reacting flow model has been developed, based upon a stoch astic modeling approach that is applicable over a wide range of Reynol ds and Schmidt numbers. All relevant length scales are resolved in one dimension which allows for direct implementation of detailed chemical kinetic calculations and molecular transport. Experiments were perfor med in a turbulent plug flow reactor for validation and application of the model to investigate the combined effects of turbulent mixing and chlorine chemistry on the formation of products of incomplete combust ion. Methyl chloride was injected into the plug flow reactor whose bas eline flow was the hot-product stream of a Toroidal Jet-Stirred Combus tor. The micromixing and chemical reaction of the injected material wi th the baseline flow was monitored as a function of distance from the point of injection. Measurements of pulsed laser Rayleigh scattering w ere used to determine the extent of mixing while species concentration s were measured via extractive sampling and GC/MS. Preliminary compari sons of model calculations and data are provided which indicate the us efulness of the current modeling approach and provide insight into the relative contributions of mixing and chemical kinetics on the formati on of products of incomplete combustion.