TEMPORALLY RESOLVED, 2-LINE FLUORESCENCE IMAGING OF NO TEMPERATURE IN A TRANSVERSE JET IN A SUPERSONIC CROSS-FLOW

被引:100
作者
MCMILLIN, BK
PALMER, JL
HANSON, RK
机构
[1] High Temperature GasDynamics Laboratory, Department of Mechanical Engineering, Stanford University, Stanford, CA
来源
APPLIED OPTICS | 1993年 / 32卷 / 36期
关键词
PLANAR LASER-INDUCED FLUORESCENCE; PLIF; TEMPERATURE IMAGING; INSTANTANEOUS TEMPERATURE MEASUREMENTS; NITRIC OXIDE FLUORESCENCE; TRANSVERSE JET IN SUPERSONIC CROSS FLOW; SCRAMJET; JET MIXING;
D O I
10.1364/AO.32.007532
中图分类号
O43 [光学];
学科分类号
070207 ; 0803 ;
摘要
Temporally resolved temperature imaging of a fuel jet in a hot, nonoxidizing supersonic cross flow is described. The temperature measurements are obtained with two lasers and two intensified cameras, with a two-line ratio of planar laser-induced fluorescence from nitric oxide, seeded either in the jet or in both the jet and the cross flow. Diagnostic issues related to the application of the two-line technique in high-speed combustion flows are addressed and include temperature sensitivity, transition selection, measurement resolution, fluorescence lifetime, temporal resolution, and intensifier and camera dynamic-range limitations. Single-shot and frame-averaged side-view temperature images of the flow field are presented, and the measurement uncertainties, which are dominated by photon statistical noise and pulse-to-pulse laser fluctuations, are discussed.
引用
收藏
页码:7532 / 7545
页数:14
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