Simulation of Start-Up Process of Turbofan Engine Based on Full-State Characteristics of Fan  

基于风扇全状态特性的涡扇发动机起动过程仿真

作　　者：FANG Jun ZHANG Tianhong 方鋆;张天宏(南京航空航天大学能源与动力学院,南京210016)

机构地区：[1]College of Energy and Power Engineering,Nanjing University of Aeronautics and Astronautics,Nanjing 210016,P.R.China

出　　处：《Transactions of Nanjing University of Aeronautics and Astronautics》2024年第S01期27-34,共8页南京航空航天大学学报（英文版）

摘　　要：Difficulties in obtaining component characteristics in the sub-idle state of rotor constrain the simulation capabilities of ground and windmill start-up processes for turbofan engines.This paper proposes a backbone feature method based on conventional characteristics parameters to derive the full-state characteristics of fan.The application of the fan’s full-state characteristics in component-level model of turbofan engine enables zero-speed iterative simulation for ground start-up process and windmill simulation for windmill start-up process,thereby improving the simulation capability of sub-idle state during turbofan engine start-up.转子慢车以下状态部件特性难以获得制约了涡扇发动机地面起动过程和高空起动过程的仿真能力。本文针对风扇特性提出采用基于常规特性参数的脊背法,外推得到风扇全状态特性。应用风扇全状态特性的涡扇发动机部件级模型在地面起动过程仿真中实现零转速迭代仿真,高空起动过程实现风车状态仿真,提高了涡扇发动机起动过程慢车以下状态的仿真能力。

关 键 词：ground start‑up simulation windmill start‑up simulation full‑state characteristics turbofan engine modeling 

分 类 号：V23[航空宇航科学与技术—航空宇航推进理论与工程]