基于数值计算的抛鸟轨迹影响因素研究  

Research on Influencing Factors of Bird Trajectory Based on Numerical Simulation

作　　者：冯传奇 张久峰 张琦[1] Feng Chuanqi;Zhang Jiufeng;Zhang Qi(Chinese Flight Test Establishment,Xi’an 710089,China)

机构地区：[1]中国飞行试验研究院,陕西西安710089

出　　处：《航空科学技术》2023年第2期34-40,共7页Aeronautical Science & Technology

基　　金：国家科技重大专项(2017-V-0001-0050)。

摘　　要：在采用气炮装置作为抛鸟设备进行航空发动机吞鸟试验时,通过鸟炮准确地将鸟体发射至发动机叶片上的选定位置是至关重要的一个环节,该过程受到多种因素的影响。采用嵌套网格方法对发动机吞鸟过程中的鸟轨迹变化及其影响因素进行了仿真研究,对比分析了不同鸟体模型、发射位置、发射速度及发动机工作状态对鸟体运动轨迹、速度及流场特性的影响。仿真结果为航空发动机吞鸟试验提供了数据支撑,可有效缩短试验周期,降低试验成本。When using air cannon device as the bird throwing equipment in the bird ingestion test of aero-engine,it is a crucial part to launch the bird body to the position selected on the engine blade through the bird cannon accurately,and the process is affected by many factors.The overset meshing method is used to simulate the bird trajectory change and its influencing factors in the process of the bird ingestion test.The effects of different bird models,launch positions,launch speeds and engine bleed air states on the bird’s trajectory,velocity and flow field characteristics are compared and analyzed.The simulation results provide data support for the aero-engine bird swallowing test,which can effectively shorten the test period and reduce the test cost.

关 键 词：航空发动机 吞鸟 轨迹 流场特性 数值模拟 

分 类 号：V263.3[航空宇航科学与技术—航空宇航制造工程]