摘要
本文用一种新的时间序列差分干涉术研究模型在超音速风洞中产生的激波流场．实．验中用调Ｑ序列脉冲红宝石激光器作光源，用转镜扫描高速摄影机作为记录设备，结合单Ｗｏｌｌａｓｔｏｎ棱镜差分干涉的方法获得了激波流场的序列差分干涉图。利用图象处理技术对干涉图进行图象处理，人机交互的方式采集数据，用条纹位移转换法将差分干涉图的条纹位移量转换为绝对干涉图的条纹位移量，然后用拉普拉斯变换法计算出了密度的相对分布值．
in this article,A new time-serial differential interferometry is discussed. By use of a serial Q-switched pulse ruby laser light source and a high-speed photographical camera, we apply the differential interferometry to the study of shockwave generated by a model in high-speed air fluid (Mach mumber is 2. 0). The differential interferometry is built up by a schlieren method and a single Wollaston prism. The shockwave photos of time-serial differential Interferometry are obtained. And image-processing technology is applied to process the differential interferogram, the quantitative density distribution of shockwave flow is given.
出处
《光子学报》
EI
CAS
CSCD
1997年第3期262-266,共5页
Acta Photonica Sinica
关键词
激波流场
高速摄影
风洞试验
Differential interferometry
Shockwave flow
Serial pulse ruby laser I High-speed photography
