Multi-element Flux Analysis for the Incorporation of Detailed Kinetic Mechanisms in Reactive Simulations

摘要

A method is proposed in this paper based on element flux analysis, which is used for the efficient incorporation of detailed fuel combustion and pollutant formation mechanisms in realistic flow calculations. Specifically, a multi-element flux analysis and a tree searching procedure are introduced to incorporate NO_x and soot formation in reduced mechanisms that are generated on the fly during the simulation in addition to the main fuel oxidation network. The inclusion of detailed kinetics in the simulation facilitates the study of combustion characteristics, including ignition time delay, pollutant emission level, and species concentration history, A reaction mechanism of the aviation fuel JP-10 with NO_x and soot formation is used to demonstrate the proposed approach. Simulation results using the on-the-fly reduced representation are compared to experimental data, and excellent agreement was observed.