基于羟基标记的速度、温度同时测量技术  

Simultaneous Temperature and Velocity Measurement Technique Based on Hydroxyl Tagging

作　　者：叶景峰[1] 李国华[1] 邵珺[1] 张振荣[1] 王晟[1] 胡志云 陶蒙蒙[1] Ye Jingfeng;Li Guohua;Shao Jun;Zhang Zhenrong;Wang Sheng;Hu Zhiyun;Tao Mengmeng(State Key Laboratory of Laser Interaction with Matter,Northwest Institute of Nuclear Technology,Xi'an 710028,Shannxi,China;Shanghai Jiao Tong University Sichuan Research Institute,Chengdu 610200,Sichuan,China)

机构地区：[1]西北核技术研究所激光与物质相互作用国家重点实验室,陕西西安710028 [2]上海交通大学四川研究院,四川成都610200

出　　处：《光学学报》2023年第17期46-54,共9页Acta Optica Sinica

基　　金：国家自然科学基金(91641112);激光与物质相互作用国家重点实验室基础课题(SKLLIM1808)。

摘　　要：基于羟基标记示踪速度测量技术,研究了基于该技术中激光光解水产生的OH-进行温度测量的双色平面激光诱导荧光(PLIF)方法和荧光强度测温方法,进而开发了一种新的速度、温度同时测量技术,并在电加热流场及超燃冲压发动机流场进行了测量验证。在室温至900 K的温度范围内,与热电偶温度测量结果比,基于光解OH-的双色PLIF温度测量的平均标准偏差为12.1 K,基于光解OH-荧光强度的温度测量最大偏差为16.8 K,速度测量不确定度在1%以内。在超燃冲压发动机流场中,利用CARS温度测量数据作为温度测量标定点,获得了标记线上温度、速度的同时测量结果,其中所得温度与CARS温度测量结果的最大偏差为44 K。Objective The simultaneous measurement of temperature and velocity plays an important role in research on turbulent combustion which is a complex problem coupled of fluid dynamics and chemical reaction dynamics.With the rapid development of laser combustion diagnosis technology,researchers have studied many schemes of simultaneous measurement of multi-parameters,such as temperature and velocity,by means of multi-technology combination and extending the multi-parameter measurement function of measurement technology.The principle of hydroxyl tagging velocimetry(HTV)is to dissociate with water molecules in the flow by lasers which produce ion OH-as tagging particles(OHP).Combined with the technique,plane laser-induced fluorescence(PLIF),OHP can be displayed in certain positions at different time.It is unnecessary to inject extra tracer particles into the flow field without a particle-following problem.OHP,the tagging molecule,is of long life in a high-temperature environment,which has the advantage of measuring velocity in flow with high temperature and velocity.The technique has been widely applied to obtain the velocity of various flows such as super-combustion ramjet engines.The technique of temperature acquiring through double-color PLIF and fluorescence intensity of OHP is configured based on OHP on the basis of HTV,making it possible to accomplish simultaneous measurement of temperature and velocity of flows.In this paper,the principle and the configuration of the set-up are fully illustrated,while an experiment to verify the technique used in the flow of temperature is conducted.Methods The key to simultaneously measuring velocity and temperature based on HTV is how to realize temperature measurement based on OHP.In this paper,two methods of temperature measurement are studied,one of which is the twoline PLIF temperature measurement method.On the basis of the PLIF device used to display the image of OHP in HTV technology,another set of PLIF devices is added to build the double-color PLIF,realizing the tempera

关 键 词：测量 速度温度同时测量 羟基示踪 光解离 激光诊断 

分 类 号：TN249[电子电信—物理电子学] TK16[动力工程及工程热物理—热能工程]