涡扇发动机过失速性能数值模拟

推进技术 ›› 2000, Vol. 21 ›› Issue (2): 12-14.

涡扇发动机过失速性能数值模拟

郁新华,杨精波,廉小纯

西北工业大学航空动力与热力工程系!陕西西安710072;西北工业大学航空动力与热力工程系!陕西西安710072;西北工业大学航空动力与热力工程系!陕西西安710072

发布日期:2021-08-15

Numerical simulation on post-stall behavior of turbofan engine

Dept.of Aeroengine Engineering,Northwesten Polytechnical Univ.,Xi′an 710072,China;Dept.of Aeroengine Engineering,Northwesten Polytechnical Univ.,Xi′an 710072,China;Dept.of Aeroengine Engineering,Northwesten Polytechnical Univ.,Xi′an 710072,China

Published:2021-08-15

摘要/Abstract

摘要： 基于风扇、压气机的级特性 ,发展了涡扇发动机过失速一维非定常逐级模拟技术 ,采用了分析压缩系统过失速响应的动态滞后方法 ,通过调节发动机尾喷管的出口面积来模拟发动机的过失速状况 ,得到了合理的定性结果

关键词: 涡轮风扇发动机;风扇;压气机;失速特性;数值仿真

Abstract: Based on the method of characteristics of the fan,compressor and turbine,a stage by stage axial flow compression system model was established.It was used to predict the post stall behaviors such as surge and rotating stall.A first order lagging method was used to simulate the compressor dynamic response during post stall conditions.The modeling technique was applied to a turbofan engine to analyze the influence of external disturbances,such as the change of the exhaust nozzle area.It shows that the numberical results compare favorably with previous results.

Key words: Turbofan engine;Fan;Air compressor;Stalling characteristic;Numerical simulation

郁新华,杨精波,廉小纯. 涡扇发动机过失速性能数值模拟[J]. 推进技术, 2000, 21(2): 12-14.