Chemical-Kinetic Mechanisms for Combustion Applications


Philosophy


The detailed chemistry posted here is designed to focus on conditions relevant to flames, high temperature ignition and detonations. It was derived by beginning with simple chemical systems then proceeding gradually to more complex systems. In this approach, the numbers of species and reactions are kept to the minimum needed to describe the systems and phenomena addressed, thereby minimizing as much as possible the uncertainties in the rate parameters employed. The philosophy thus differs from that underlying a number of other data bases, many of which seek completeness, attempting to include all potentially relevant elementary steps. In following the plan based on the present philosophy, the experience has been that the rate parameters of a relatively small number of elementary steps are of crucial importance to the predictions and that cumulative effects of small contributions from a large number of steps are seldom of much significance. This is advantageous because the many uncertainties in rate parameters of many steps increase the uncertainties in predictions when large number of steps are included. As the database for the present mechanism evolves, it should be applicable to an increasing number of combustion and detonation processes.

Mechanism and Thermodata

San Diego Mechanism 2005/12/01