Research On Numerical Simulation Of Reactive Flow In Combustor With Detailed Chemical Kinetic Mechanisms

In arbitrary curvilinear coordinate systems, two dimensional reduced model combustor of a certain small aero engine were investigated by using numerical simulation method with the detailed chemical kinetic mechanisms of n-heptane (C7H16). Under the two-dimensional body-fitted grid , the turbulent characteristics were estimated byκ-εequations , the reacting rate was estimated by Eddy Dissipation Concept Model (EDC). To consider the influence of heat radiation on the gas temperature and wall temperature, the six flux model was applied to predictions of heat flux distributions. In the paper the reacting model was PSR (perfectly stirred reactor), which was used in every node. The discretization of governing equations on a non-staggered grid system and discretization equations are solved with SIMPLE algorithm. In the solving procedure, the Application Programmatic Interface of CHEMKIN, a gas phase chemical kinetics software, is called, with it many useful data was gotten. In this paper, the temperature field , the concentrations of the major components and the flow field were gotten under two different detailed chemical kinetic mechanisms, and the relationship between some certain components validated the feasibility and correction of this method.