TDLAS与CARS共线测量发动机温度  

Measurements of Engine Combustion Temperature by Using Coaxial TDLAS and CARS Technique

作　　者：陶波[1,2] 王晟[2] 胡志云[2] 叶景峰[2] 李国华[2] 范玮[1] 

机构地区：[1]西北工业大学动力与能源学院,西安710072 [2]西北核技术研究所激光与物质相互作用国家重点实验室,西安710024

出　　处：《工程热物理学报》2015年第10期2282-2286,共5页Journal of Engineering Thermophysics

基　　金：国家自然科学基金资助项目(No.51176159)

摘　　要：发动机燃烧室设计以及计算流体动力学模型的建立和验证需要对燃烧室流场温度等参数进行精细化测量。本文提供了一种TDLAS与CARS技术共线的测温装置,解决了两种技术在联合测量时探测区域不一致的问题,同时使二者共用发射端与接收端,降低了系统的复杂性。利用建立的测量系统在超燃发动机试验台不同位置处开展了温度测量实验,结果表明发动机燃烧段的凹槽区域内(距流道下壁面>30mm)煤油燃烧时期温度最高(约2400 K),而发动机燃烧段下沿(距流道下壁面<10 mm)煤油燃烧时期温度上升不明显。Accurate measurement of engine combustor temperature is indispensable to optimize the design of engine,as well as establish and validate computational fluid dynamics model.This paper provides a temperature measurement device using coaxial TDLAS and CARS technique.The main work is to solve the problem of inconsistent detection area while using these two techniques,and make the two techniques shared the same transmitting part and the collecting part.The temperature measurement experiment was carried out on a model scramjet engine.The results show that the groove region segment within engine combustor（distant from the underside wall 〉30 mm） has the highest temperature（about 2400 K） during kerosene burning period,while the rise of temperature at the position of less than 10 mm（distant from the underside wall） is not obvious.

关 键 词：TDLAS CARS 温度测量 发动机 

分 类 号：TN249[电子电信—物理电子学]