摘要
利用单脉冲激光诱导偏振光谱技术测量了甲烷/空气预混火焰、酒精灯火焰和固体燃剂燃烧场中OH的二维分布。简述了激光诱导偏振光谱技术的基本原理和二维测量的实验方法;通过测量火焰中OH自由基A^2∑^+-X^2∏(0,0)跃迁带中Q1(8)吸收线的强度,获得了燃烧场中OH的二维分布。实验结果对了解火焰构造,研究燃烧机理等有一定的参考价值。
Laser induced polarization spectroscopy was demonstrated.This technique was applied to the detection of OH in flames.The polarization spectrum was recorded in Q1 branch of the A2∑＋-X2∏（0,0） band of OH at 308 nm.A coherent imaging geometry was used for two-dimensional measurement,where a sheet-shaped pump beam crossed an unfocused probe beam.Single-pulse two-dimensional images of OH were measured in premixed methane-air flame,alcohol burner flame and solid fuel flame,which are helpful to understand the combustion mechanism.
出处
《工程热物理学报》
EI
CAS
CSCD
北大核心
2010年第11期1973-1976,共4页
Journal of Engineering Thermophysics
关键词
激光
燃烧诊断
火焰
偏振光谱
laser
combustion diagnostics
flame
polarization spectroscopy
