光学精密工程2017，Vol.25Issue(7)：1689-1696,8.DOI:10.3788/OPE.20172507.1689
羟基分子标记示踪速度测量中的强振动干扰抑制
Vibration disturbance suppression in velocity measurements by hydroxyl tagging velocimetry
摘要
Abstract
In order to suppress the strong vibration disturbance in Hydroxyl Tagging Velocimetry (HTV) in practical experimental environment for an engine,the characteristic of radiation spectrum of tagging laser interacted with different flow fields was analyzed experimentally.In the experiment,two strategies for vibration disturbance suppression were designed by capturing the tagging laser image and moved tagging image simultaneously.For a general flow field,the Rayleigh scattering of the tagging laser was used as reference images,and in a combustion flow field which contained unburned large hydrocarbon fuel like kerosene,CH4,the radiation of the tagging laser induced fuel in the waveband of OH fluorescence spectrum was taken as reference images.The velocity measurement in the flow field of a scramjet engine indicates that the two approaches can suppress the vibration disturbance efficiently.Moreover,the Rayleigh scattering image of the tagging laser is disturbed by wall scattering in the relative pure flow region,making the uncertainty of the base tagging position identification approximate to 0.06 mm.In the follow region with abundant unburned fuels,the latter method can obtain comparatively clear tagging laser images with the uncertainty of base tagging position identification reduced to 0.03 mm,which equals to the uncertainty of the average method.关键词
激光诊断/羟基分子标记示踪/速度测量/振动干扰/超燃冲压发动机Key words
laser diagnostic/Hydroxyl Tagging Velocimetry(HTV)/velocity measurement/vibration disturbance/Scramjet engine分类
信息技术与安全科学引用本文复制引用
叶景峰,邵珺,李国华,胡志云,宋文艳..羟基分子标记示踪速度测量中的强振动干扰抑制[J].光学精密工程,2017,25(7):1689-1696,8.基金项目
国家自然基金资助项目(No.91541203,No.91641112) （No.91541203,No.91641112）
