Influence of Finite Chemistry Reaction Rate Model on High Temperature Air Combustion

To get the more proper research methods to high temperature air combustion (HTAC), the influence of finite chemistry reaction rate model on HTAC is numerically analyzed by making use of reaction mechanisms. The one-step-reaction finite chemistry reaction rate, four-step-reaction finite and eddy dissipation model are considered, respectively. The temperature of four-step-reaction finite is lower than that of the other two reaction models, because several positive and reverse reaction steps are investigated in it, and the lower temperature also restrains the formation of thermal NO_x. It also leads to a little increase of CO₂, which meets to the properties of HTAC, owing to the several reaction steps. The difference between the results of one- step-reaction finite and eddy dissipation model is little because the experiential parameters in one-step-reaction finite are obtained from normal temperature. It can be concluded that the finite chemistry reaction rate models have good adaptability, whether one-step-reaction or four-step-reaction.