An investigation of aerodynamic performance of aeroengine fan and booster under non-uniform inlet conditions

Non-uniform inlet conditions have become increasingly important in recent years for simulating the aerodynamic performance of turbofan engine with real flight situations. This paper focuses on a particular fan and booster structure and employs frozen rotor interface method for 3D full-channel CFD simulation. Inlet distortion and rain ingestion are used as two representative non-uniform inlet conditions discussed in this work. It is found that the circumferential total pressure distortion develops along the flow direction, and leads to total temperature distortion. Additionally, the regulation of rain movement in fan and booster structures is investigated, and some factors about water inlet ratio impacting the performance of core engine and wet compression mechanism affecting the bypass performance are discussed.