涡桨飞机发动机进气道吞鸟特性数值研究  

Numerical simulation on bird ingestion characteristics from engine inlet of turboprop aircraft

作　　者：周浩宇 吴祯龙 谢买祥 谭慧俊[1] 郑高杰 张峰旗 罗刚[1] 陈伟[1] ZHOU Haoyu;WU Zhenlong;XIE Maixiang;TAN Huijun;ZHENG Gaojie;ZHANG Fengqi;LUO Gang;CHEN Wei(College of Energy and Power Engineering,Nanjing University of Aeronautics and Astronautics,Nanjing 210016,China;Hunan Aviation Powerplant Research Institute,Aero Engine Corporation of China,Zhuzhou Hunan 412002,China)

机构地区：[1]南京航空航天大学能源与动力学院,南京210016 [2]中国航发湖南动力机械研究所,湖南株洲412002

出　　处：《航空动力学报》2024年第12期466-480,共15页Journal of Aerospace Power

基　　金：民用飞机专项科研项目(MJ-2020-F-10)。

摘　　要：根据适航规章,针对常见外来异物—鸟进行属性分析,确定其几何、质量以及初始姿态和速度特性;通过计算流体力学(CFD)将“动网格法”和六自由度方法耦合,对涡桨飞机主发动机进气道的吞鸟特性进行数值模拟,研究在螺旋桨/进气道/旁通道一体化条件下,鸟类异物被吸入发动机进气道过程中的轨迹特性与排除特性的影响规律。结果表明:鸟类异物进入进气道后会使进气道流动环境恶化,进气道气动交界面(AIP)内的总压恢复系数降低、总压畸变指数增大;在所模拟的工况下鸟都从旁通道排除或者与旁通道壁面碰撞,均可认为排除;来流马赫数对鸟进入进气道入口前的姿态有很大影响,高主流出口马赫数和大飞行攻角下鸟更容易被吸入主发动机,有可能对主发动机造成严重影响。According to airworthiness regulations,attribute analysis on common foreign objects—birds,was conducted,and their geometric,mass,initial attitude,and velocity characteristics were determined;through computational fluid dynamics(CFD),the“dynamic grid method”and the six degrees of freedom method were coupled to numerically simulate the bird swallowing characteristics of the main engine inlet of a turboprop aircraft.The influence of the trajectory characteristics and exclusion characteristics of birds being sucked into the engine inlet was studied under the condition of integrated propeller/inlet/bypass channels.The results showed that the flow environment of the inlet may deteriorate,the total pressure coefficient of restitution in the aerodynamic interface plane(AIP)of the inlet may decrease,and the total pressure distortion may increase after the birds enter the inlet;under the simulated working conditions,birds were excluded from the side channel or collided with the wall of the side channel,which can be considered exclusion;the incoming Mach number had a significant impact on the attitude of birds before entering the inlet.At high outlet Mach numbers and high angles of attack,the bird body was more likely to be sucked into the main engine,which may have a serious impact on the main engine.

关 键 词：涡桨发动机 外来异物 鸟撞 进气道 旁通道 

分 类 号：V211.3[航空宇航科学与技术—航空宇航推进理论与工程]