论文部分内容阅读
针对高速空气流场中气体瞬时速度的非接触测量,提出采用序列脉冲作为光源的拉曼激发-激光诱导电子荧光(YRELIEF)法,通过对其测量原理的分析、激光器件及测量系统的选择、主要部件的设计及最终的实验研究,得到系统的最佳参数及风洞流场的标记图像。研究结果表明,本文提出的方法是风洞高速不稳定流场速度非接触测量的最佳方案之一,在未来流场检测技术中具有应用前景。
Aiming at the non-contact measurement of gas instantaneous velocity in high-speed air flow field, a Raman excitation-laser induced electron fluorescence (YRELIEF) method using sequence pulse as light source is proposed. By analyzing its measuring principle, selection of laser device and measuring system, The main components of the design and the final experimental study, the best parameters of the system and the wind tunnel flow field marking images. The results show that the method proposed in this paper is one of the best solutions for non-contact velocity measurement of high speed and unstable flow in wind tunnel, and has potential application in future flow field detection.