PIV技术在超及高超声速流场测量中的研究进展

本文分析了超声速流场对测量技术的特殊要求, 归纳了目前将粒子影像测速仪(particle image velocimetry, PIV)技术应用于超声速流场的测量时所面临的主要技术难点以及主要的解决方法, 分析了超声速流场中所用PIV粒子的主要要求、粒子特性、投放方法等, 介绍了PIV技术在超声速、高超声速流场测量中最新的国内外进展, 特别是给出了国内外关于高超声速流场中激波/附面层的相互干扰, 以及高超声速飞行器超燃冲压发动机主要部件内流场的PIV试验研究的最新进展.

THE DEVELOPMENT OF THE PIV EXPERIMENTAL STUDY OF THE SUPER/HYPERSOINC FLOWFIELD

The special requirement for the measurement of the supersonic flowfield is analysized,and the major diffcult and the corresponding solution about using the art PIV technique in the measurement of the super/hypersonic flowfield is concluded.The analysis is mainly focused on the major requirement on the trace particle,the characteristics of the particle and the different method to put it in the flowfield.Finally the recent development of the PIV measurement of the super/hypersonic flowfield is introduced and summarized,mainly focused on the PIV measurement of the hypersonic shock wave/boundary layer interactions in the hypersonic flow and the PIV measurement of the internal flowfield of the key components of the scramjet propulsion system.The result provided the useful information for the relative researchers.