S. D. Farahani - Department of Mechanical Engineering, Arak University of Technology, Arak, Iran
M. Alibeigi - Department of Mechanical Engineering, Arak University of Technology, Arak, Iran
M. R. Sabzehali - Department of Mechanical Engineering, Arak University of Technology, Arak, Iran

The turbofan engines are one of the constitutes significant components of the aero engines. In this study, the thermodynamic modeling of the TF۳۰-P۴۱۴ turbofan engine is developed and validated with reference values. The aims of this research are to determine the effect of the changes in the thrust, fuel mass flow rate, and thermal efficiency with changes of the flight-altitude (H) and the flight-Mach number (Ma). Then, the changing of the exergy efficiency and exergy destruction rate were investigated.The results show that between the different components of the engine in different flight circumstances, the highest exergy destruction occurred in the combustion chamber and the lowest exergy destruction occurred in the nozzle. Also, optimization with the objective function of finding optimum flight conditions to find the highest exergetic efficiency in the flight-Mach number of ۱.۲ to ۲.۲ and the flight altitude of ۱۰,۰۰۰ to ۱۵,۰۰۰ meters.The results of this optimization reported that the maximum exergetic efficiency happened to the conditions of H=۱۱۲۳۶ meters and Ma=۱.۹۴۴ with an amount of ۳۲.۶۴%.

Exergy and Energy Analysis, Flight-altitude, Mach number, Turbofan Engine