PIV及PSP技术在大飞机风洞试验中的综合应用  

Integrated application of PIV and PSP in large aircraft wind tunnel test

作　　者：尚金奎[1] 李玉军[1] 赵荣奂 王猛[1] 衷洪杰[1] 徐兆楠 崔晓春[1] SHANG Jinkui;LI Yujun;ZHAO Ronghuan;WANG Meng;ZHONG Hongjie;XU Zhaonan;CUI Xiaochun(AVIC Aerodynamics Research Institute,Shenyang 110034,China)

机构地区：[1]中国航空工业空气动力研究院,沈阳110034

出　　处：《空气动力学学报》2023年第12期107-117,共11页Acta Aerodynamica Sinica

基　　金：民机科研项目。

摘　　要：在FL-61风洞中,对高频粒子图像测速(particle image velocimetry, PIV)试验系统在真实风洞环境中的速度场测量精度进行了试验研究,结果表明在30~280 m/s范围内,PIV试验系统测量精度优于1%。以不同厚度和粗糙度的聚酰亚胺不干胶薄膜模拟模型表面PSP涂层,研究了压力敏感涂层(pressure sensitive paint, PSP)对测力测压数据的影响,结果表明将涂层厚度控制在0.03 mm以内可有效降低涂层对测力测压数据的影响。在FL-62连续式跨声速风洞中使用民机校验模型,进行了两种技术的综合应用研究,采用极短时间间隔的错时采集技术,实现了PIV技术与PSP技术的准同步综合化应用,获得了大飞机模型机翼上表面空间流动速度场及机翼表面压力分布。The accuracy of measurement techniques in wind tunnels holds utmost significance in ensuring reliable test outcomes.The present study delves into the accuracy levels of a high-frequency particle image velocimetry(PIV)system in the FL-61 wind tunnel.The results indicate that the PIV system's measurement accuracy surpasses 1%within a freestream velocity range from 30 m/s to 280 m/s.Moreover,the influence of pressure-sensitive paint(PSP)coating on force and pressure measurement tests was also investigated,utilizing polyimide films with varying thicknesses and roughnesses as PSP coatings.It is found that a PSP coating with a thickness of less than 0.03 mm is imperative to obtain reliable force and pressure data.Furthermore,an experimental study of a civil aircraft calibration model was conducted in the FL-62 continuous transonic wind tunnel by acquiring PIV and PSP data at extremely short temporal intervals.The quasi-synchronous integration of PIV and PSP provides the three-dimensional velocity fields over the wing and surface pressure for the aerodynamic performance evaluation.

关 键 词：粒子图像测速技术 压力敏感涂料技术 民机校验模型 大飞机 

分 类 号：V211.71[航空宇航科学与技术—航空宇航推进理论与工程]