航空发动机进气旋流畸变研究综述

为完善和发展航空发动机进气旋流畸变研究体系,回顾了进气旋流畸变的产生与来源,概述了国内外模拟旋流畸变的方法。归纳总结了不同类型、不同结构的旋流畸变对压气机以及航空发动机性能和稳定性的影响。综合分析了当前旋流畸变研究存在的问题和困难,对旋流畸变的发展趋势进行了讨论,提出以下建议:发展可变式旋流畸变发生器;探究旋流畸变对发动机整机性能的影响机理,为有效扩稳打下基础;要利用多种途径开展旋流进气条件下的压气机/发动机扩稳研究;建立统一的旋流畸变评价指标,并纳入到综合畸变指数系统中;探索小畸变进气道的设计方法。

Review of aero-engine inlet swirl distortion research

In order to improve and develop the research system of inlet swirl distortion of aero-engine, the generation and source of inlet swirl distortion were reviewed, and the methods of simulating swirl distortion at home and abroad were summarized. The influences of swirl distortion of different types and structures on the performance and stability of compressors and aero-engines were summarized. The existing problems and difficulties in the current study of swirl distortion were analyzed synthetically, and the development trend of swirl distortion was discussed. Following suggestions are given: a variable swirl distortion generator should be developed. It is necessary to investigate the influence mechanism of swirl distortion on engine performance to lay a foundation for extending stable working range of engine effectively. Many ways should be used to extend stable working range of compressor/engine under the condition of inlet swirl. A unified evaluation index of swirl distortion should be established and incorporated into the integrated distortion index system. The design method of small distortion inlet should be explored.