摘要
针对高温高速燃烧流场速度测量问题,提出了基于可调谐二极管激光吸收光谱技术的燃烧流场速度测量方法,设计了以7,185.597,cm-1谱线为吸收中心的交叉光束扫描波长直接吸收光谱技术系统,利用该系统对采用煤油燃烧加热方式的发动机来流系统模拟的高速流场速度进行了测量,获得了交叉光束吸收中心多普勒频移量,据此计算得到模拟来流的流场速度,并将其与一维理论计算值与数值模拟计算值进行对比,相对偏差在10%,以内,验证了基于TDLAS的燃烧流场速度测量结果的有效性.
Aiming at the velocity measurement in harsh combustion flow with high temperature and high speed, the velocity measurement method based on tunable diode laser absorption spectroscopy （TDLAS） was presented. The two- crossed-beams scanned-wavelength direct absorption spectroscopy （SDAS） system with 7 185.597 cm-1 as center fre- quency was designed for the velocity measurement of the flow in incoming simulated system, which used the com- bustion of kerosene fuel to heat the air. Compared with the one-dimensional theoretical calculated value and numerical simulation value, the relative deviations are less than 10%, showing that the velocity measurement using TDLAS is effective value for combustion flow.
出处
《燃烧科学与技术》
EI
CAS
CSCD
北大核心
2015年第6期516-520,共5页
Journal of Combustion Science and Technology
基金
上海市科委科研计划资助项目(13DZ2260900)
上海高校青年教师培养资助计划项目(ZZslgl5002)
关键词
测量
燃烧诊断
可调谐二极管激光吸收光谱
流场速度
发动机
measurement
combustion diagnostics
tunable diode laser absorption spectroscopy, TDLAS
flow velocity
engine
