Statistical Treatment of Non-Isothermal Chemical Reactions in Turbulence

Abstract

The goal of this investigation was to link as closely as possible a reactive flow study to one of simple mixing of passive scalar fields. Such a link would allow experimental or theoretical information from relatively simple non-reactive turbulent diffusion systems to be translated into useful reactive flow information. Probability density functions were used as the primary dynamical variables. The particular non-isothermal problem of autoignition, with reactant consumption modeled by an explicit temperature dependent reaction rate was treated in detail. Also presented was a formulation of the problem of generation of acoustic and vorticity modes in homogeneous turbulence by chemically generated heat production. (DDA)