涡扇发动机动态过失速数值模拟

推进技术 ›› 2017, Vol. 38 ›› Issue (1): 40-46.

涡扇发动机动态过失速数值模拟

严伟,胡骏,杨帆,屠宝锋

南京航空航天大学能源与动力学院，江苏省航空动力系统重点实验室，江苏南京 210016,南京航空航天大学能源与动力学院，江苏省航空动力系统重点实验室，江苏南京 210016,南京航空航天大学能源与动力学院，江苏省航空动力系统重点实验室，江苏南京 210016,南京航空航天大学能源与动力学院，江苏省航空动力系统重点实验室，江苏南京 210016

发布日期:2021-08-15
作者简介:严伟，男，博士生，研究领域为航空发动机气动稳定性。
基金资助:
南京航空航天大学青年科技创新基金(NS2014021)。

Numerical Simulation of Post-Stall Transients in Turbofan Engine

Nanjing University of Aeronautics and Astronautics，Jiangsu Province Key Laboratory of Aeronautics Power System，Nanjing 210016，China,Nanjing University of Aeronautics and Astronautics，Jiangsu Province Key Laboratory of Aeronautics Power System，Nanjing 210016，China,Nanjing University of Aeronautics and Astronautics，Jiangsu Province Key Laboratory of Aeronautics Power System，Nanjing 210016，China and Nanjing University of Aeronautics and Astronautics，Jiangsu Province Key Laboratory of Aeronautics Power System，Nanjing 210016，China

Published:2021-08-15

摘要/Abstract

摘要： 为模拟涡扇发动机的动态过失速过程，发展了一种二维非定常的数值计算方法，通过给定不同的发动机初始工作点和扰动，实现了对涡扇发动机进入、退出喘振和旋转失速过程的模拟。计算结果表明，发展的数值模拟方法能够反映出喘振和旋转失速的基本特征，可以预测喘振信号的振荡频率、强度，以及旋转失速团的传播频率和失速团沿发动机流路的发展；当旋转失速完全发展时，发动机内部各个位置处的失速团具有相同的周向传播频率，但是强度不同，发动机进、出口处的失速团信号最弱，压缩部件进口和低压涡轮出口处的失速团信号最强。

关键词: 涡扇发动机；过失速；二维非定常；数值模拟；扰动

Abstract: A two-dimensional unsteady numerical method has been performed to simulate the post-stall transients in turbofan engine. By assigning different initial work points and different types of disturbances，the process of the turbofan engine stepping in and out of surge or rotating stall was simulated. The results of numerical computation indicate that the new method can simulate the basic features of surge and rotating stall. It can be used to predict the oscillation frequency and intensity of surge signal，also the propagating frequency and the development in engine flow path of the rotating stall cell. When the rotating stall is fully developed in the engine，the stall cells all over the engine share the same circumferential propagating frequency，while their intensity is different. The stall cells at the inlet and outlet of the engine are weak，while the stall cells at the inlet of the compressors and the outlet of the low pressure turbine are strong.

Key words: Turbofan engine；Post-stall；Two-dimensional unsteady；Numerical simulation；Disturbance

严伟,胡骏,杨帆,屠宝锋. 涡扇发动机动态过失速数值模拟[J]. 推进技术, 2017, 38(1): 40-46.

YAN Wei,HU Jun,YANG Fan,TU Bao-feng. Numerical Simulation of Post-Stall Transients in Turbofan Engine[J]. Journal of Propulsion Technology, 2017, 38(1): 40-46.

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