多频率组合波形阵风场模拟与测量研究  

SIMULATION AND MEASUREMENT OF MULTI-FREQUENCY COMBINED WAVEFORM GUST FIELD

作　　者：于金革[1,2] 马占元 张颖 杨希明[1,2] 韩超 许相辉[1,2] YU Jin-ge;MA Zhan-yuan;ZHANG Ying;YANG Xi-ming;HAN Chao;XU Xiang-hui(Aerodynamics Research and Test Part Four,AVIC The Aerodynamics Research Institute,Harbin 150001,China;Aerodynamics for Low Speed and High Reynolds Number,Harbin 150001,China)

机构地区：[1]中国航空工业空气动力研究院气动研究与试验四部,哈尔滨150001 [2]低速高雷诺数气动力航空科技重点实验室,哈尔滨150001

出　　处：《工程力学》2024年第3期250-256,共7页Engineering Mechanics

基　　金：国家重点专项资助项目(XX-2017-F-08)。

摘　　要：基于数值模拟方法选取设定FL-51风洞阵风发生器的装置参数,如发生器叶片的数量、展长、弦长及间距等。发生器采用液压摆动缸独立驱动形式,可模拟正弦波、三角波及随机波等多种波形的多频率组合运动,同时能够减少安装传动件,并提升发生器性能。通过阵风场校测结果表明:叶片能够实现摆动频率为0 Hz~15 Hz,在校测范围内发生器产生的正弦流场较均匀;在来流风速40 m/s、叶片摆动频率为10 Hz、摆角为15°时,最大阵风幅值为8.5 m/s。地面测试与流场校测结果表明:该文所提出的阵风场模拟技术可以实现低速风洞多频率多波形组合运动,为风洞试验提供复杂的阵风流场。The device parameters,such as the number,span,chord length and spacing of generator vanes of the FL-51 wind tunnel gust generator are selected by numerical simulation methods.The generator adopts the independent driving form of the hydraulic swing cylinder,which can simulate the multi-frequency combined motion of various waveforms such as sine wave,triangle wave and random wave.At the same time,it can reduce the installation of transmission and improve the performance of the generator.Using the flow display technology to study the generation and development process of the gust flow field can realize the refinement and visualization characteristics of the gust flow field.The results of the gust field calibration show that:the blade can achieve a swing frequency of 0 Hz-15 Hz,and the sinusoidal flow field generated by the generator is relatively uniform within the calibration range;when the incoming wind speed is 40 m/s,the blade swing frequency is 10 Hz and the swing angle at 15°,the maximum gust amplitude is 8.5 m/s.The results of ground test and flow field calibration show that:the gust field simulation technology proposed can realize multi-frequency and multi-waveform combined motion in low-speed wind tunnels,and provide complex gust flow field for wind tunnel test.

关 键 词：低速风洞 阵风发生器 独立驱动 多频率 组合波形 阵风流场测量 

分 类 号：V211.72[航空宇航科学与技术—航空宇航推进理论与工程]