吞雨对航空发动机风扇气动性能的影响

中国民航大学学报 ›› 2021, Vol. 39 ›› Issue (3): 49-55.

吞雨对航空发动机风扇气动性能的影响

白杰，陈岩康，傅文广，孙鹏

（中国民航大学 a. 适航学院； b. 航空工程学院，天津 300300）

收稿日期:2020-11-12 修回日期:2020-11-12 接受日期:2020-10-21 出版日期:2021-06-25 发布日期:2021-11-28
作者简介:白杰（1963—），男，辽宁铁岭人，教授，硕士，研究方向为航空发动机适航理论与技术.
基金资助:
中国民航大学科研启动基金项目（2020KYQD34）；中央高校基本科研业务费专项（3122019170）

Influence of rain ingestion on aerodynamic performance of aero-engine fan

BAI Jie , CHEN Yankang, FU Wenguang, SUN Peng

（a. College of Airworthiness; b. College of Aeronautical Engineering, CAUC, Tianjin 300300, China）

Received:2020-11-12 Revised:2020-11-12 Accepted:2020-10-21 Online:2021-06-25 Published:2021-11-28

摘要/Abstract

摘要： 为了研究吞雨对航空发动机风扇气动性能的影响，以 DGEN380 中的风扇作为研究对象，利用数值模拟分析吞雨量及雨滴直径不同时，吞雨对风扇气动性能的影响，重点分析不同吞雨量下流场的变化。结果表明：同一雨滴直径下，随着吞雨量的增加，风扇效率、压比及稳定裕度总体上均有所下降，且吞雨量越大下降幅度越大；当吞雨量为 4%，雨滴直径为 0.5、1.0、2.0 mm 时，风扇压比改变较小，风扇效率的下降主要在靠近堵塞边界处；在 0%、4%和 8%吞雨量下，随着吞雨量增加，风扇动叶通道中尾迹和叶尖泄漏涡引起的损失也在增加，在静叶通道上半叶高区域中，雨滴引起的掺混损失在不断增加。

关键词: 航空发动机, 风扇, 吞雨, 数值模拟, 气动性能

Abstract: In order to investigate the influence of rain ingestion on the aerodynamic performance of aero-engine fan, fan component of DGEN380 is taken as research object, numerical simulation is conducted to explore the influence of different rain ingestion volumes and raindrop diameters on the aerodynamic performance of the fan, and the variation of flow field with different rain ingestion volumes is analyzed emphatically. Results show that all the three indicators including fan efficiency， pressure ratio, and stability margin decrease with the increase of rain ingestion volume, and the greater the rain ingestion volume becomes, the greater the decline is. When the rain ingestion volume is 4% and the raindrop diameter is 0.5 mm, 1.0 mm and 2.0 mm, the pressure ratio of the fan changes little, the efficiency decreases mainly near the block boundary. Under the conditions of 0%, 4% and 8% rain ingestion volume, loss caused by wake and tip leakage vortices in fan rotor passage increases with the increase of rain ingestion volume; the mixing loss caused by raindrops increases in the high region of the upper lobe of stator channel.

Key words: aero-engine, fan, rain ingestion, numerical simulation, aerodynamic performance

中图分类号:

V235

白杰 , 陈岩康 , 傅文广 , 孙鹏. 吞雨对航空发动机风扇气动性能的影响[J]. 中国民航大学学报, 2021, 39(3): 49-55.

BAI Jie , CHEN Yankang, FU Wenguang, SUN Peng. Influence of rain ingestion on aerodynamic performance of aero-engine fan [J]. Journal of Civil Aviation University of China, 2021, 39(3): 49-55.

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