Quasi-one-dimensional model of supersonic a combustor with various fuels

A computationally efficient quasi-one-dimensional model is needed to facilitate designs of scramjet engines.A universal quasi-one-dimensional hypersonic propulsion model was developed which is applicable to both gas and liquid hydrocarbon fueled scramjets with isolators and transonic flow.Euler equations are used to analyze the effects of combustor cross sectional area variation,evaporation of liquid fuels,fuel mass addition,friction and the oblique shock train in the isolator.The model was evaluated against three scramjet experiments with various fuels,the hydrogen-fueled NAL dual-mode scramjet,a supercritical kerosene-fueled scramjet and a liquid kerosene-fueled scramjet.The effectiveness and accuracy of the model were validated by good agreement between the predictions and experimental data.Thus,this scramjet propulsion model can be used for configuration design and parameter optimization with different kinds of fuels.