Numerical simulation of post-stall transients in turbofan engine

Affiliation of Author(s):能源与动力学院

Journal:Tuijin Jishu

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. © 2017, Editorial Department of Journal of Propulsion Technology. All right reserved.

ISSN No.:1001-4055

Translation or Not:no

Date of Publication:2017-01-01

Co-author:严伟,Yang Fan,Tu Baofeng

Correspondence Author:严伟,hj

Date of Publication:2017-01-01