Modeling turbulent/chemistry interactions using assumed PDF methods
Conference Paper
Overview
Overview
abstract
1992 by the American Institute of Aeronautics and Astronautics. lnc. All rights reserved. Two assumed probability density functions (pdfs) are employed for computing the effect of temperature fluctuations on chemical reaction. The pdfs assumed for this purpose are the Gaussian and the densities of the first kind. The pdfs are first used in a parametric study to determine the influence of temperature fluctuations on the mean reaction rate coefficients. Results indicate that temperature fluctuations significantly affect the magnitude of the mean reaction rate coefficients of some reactions, depending on the mean temperature and the intensity of the fluctuations. The pdfs are then tested on a high-speed turbulent reacting mixing layer. Results clearly show a decrease in the ignition delay time due to increases in the magnitude of most of the the mean reaction rate coefficients.
