Research on quasi one dimensional modeling of the scramjet engine

The quasi one dimensional flow field analysis model for the scramjet engine was built based on the theory of quasi one dimensional flow and the influence coefficient method. Some influence factors were considered in the model, such as the quality of fuel additive, the changes of section, the wall friction and the chemical heat release. The parameters variations along the axis direction and the exit parameters of the scramjet can be given in a short time by using the analysis model. Focused on an airframe/propulsion integrated single module vehicle, the accuracy of the quasi one dimensional model was verified through comparison with the CFD. The results show that the quasi one dimensional model is simple, rapid, and highly accurate for calculation and analysis for the scramjet, and can be used in the preliminary stage.